{"version":"1.0.0","episode":{"title":"Bore Scoring Is A Myth? Blackstone Labs Porsche Data Revealed!","url":"http://getcarcurious.com/episodes/bore-scoring-is-a-myth-blackstone-labs-porsche-data-revealed-719d793e-8fc7-473b-8930-d0a6b401de8e","audioUrl":"https://sphinx.acast.com/p/open/s/69d39d9207bc2cbfc7a37727/e/69dd67d03472e03bc7165817/media.mp3","description":"Do you want the actual data from the expert that disputes everything you have heard about Bore Scoring?  Every forum, Facebook group, and \"expert\" corner of the internet would have you believe that if you own a water-cooled 911, your engine is a ticking time bomb. I’ve spent countless nights losing sleep over this—so I went straight to the source for the real numbers.In this episode of ElevenAfterNine, I’m joined by Joe Adams of Blackstone Labs. Joe isn’t guessing; he’s looking at a database of thousands of Porsche engine samples. We break down the actual failure rates for the 996, 997, and 991 generations, and the results are not what you’ve been told.Connect with ElevenAfterNine:• Official Website: ElevenAfterNine.com (Leave a topic suggestion or question!)• Instagram: @theelevenafternine• Podcast: Search \"ElevenAfterNine\" on Apple Podcasts, Spotify, or wherever you listen.Connect with Blackstone Labs:• Website: Blackstone-labs.com• Podcast: Check out Joe on the Slick Talk podcast. Hosted on Acast. See acast.com/privacy for more information."},"annotations":[{"startTime":141.5,"endTime":147.0,"type":"car","title":"Porsche 996","url":"/cars/porsche/911","image":"https://upload.wikimedia.org/wikipedia/commons/c/c6/2013_Porsche_911_Carrera_4S_%28991%29_%289626546987%29.jpg","quote":"We cover the bore score rates for not only the 996s and 997s, but I also talked to them about the 991s.","canonicalId":"car:porsche:911","priority":0.9,"confidence":0.9,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"“996” refers to the Porsche 911 generation produced in the late 1990s and early 2000s. In this episode, the host is discussing “bore score” rates for these cars, which is a cylinder-wall wear issue tied to engine oiling and maintenance history.","simplifiedExplanation":"Porsche 996 is a specific generation of the Porsche 911. The episode is talking about a known engine wear problem (“bore scoring”) and how often it shows up in cars like these.","imageAttribution":"David Villarreal Fernández (CC BY-SA 2.0)"}},{"startTime":149.0,"endTime":153.0,"type":"concept","title":"oil change","url":"/glossary/oil-change","quote":"But when you should consider doing an oil change and spoiler alert, it doesn't have to be every year.","canonicalId":"concept:oil-change","priority":0.9,"confidence":0.9,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"An oil change is the scheduled replacement of engine oil, which is critical for lubrication and carrying away heat and contaminants. The host is setting up a discussion on when you should change oil and whether it truly needs to be done every year.","simplifiedExplanation":"An oil change is when you replace the engine oil. It helps keep the engine lubricated, and the episode is asking how often you really need to do it."}},{"startTime":154.1,"endTime":159.0,"type":"term","title":"oil additives","url":"/glossary/oil-additives","quote":"We talk about what breaks down with the oil and do additives really matter?","canonicalId":"term:oil-additives","priority":0.5,"confidence":0.8,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"Oil additives are aftermarket or supplemental chemicals mixed with engine oil to claim benefits like cleaning, friction reduction, or wear protection. The host specifically questions whether additives “really matter,” which is a common debate among owners trying to prevent engine wear.","simplifiedExplanation":"Oil additives are extra chemicals you add to engine oil to try to improve how it works. The episode is basically asking whether those additives actually help, or if regular maintenance is what matters more."}},{"startTime":223.8,"endTime":292.3,"type":"term","title":"oil analysis","url":"/glossary/oil-analysis","quote":"Nothing better than oil analysis to help answer those questions... The whole point is that we want you to be able to understand the data that we pull from the sample.","canonicalId":"term:oil-analysis","priority":0.9,"confidence":0.9,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"Oil analysis is a diagnostic process where a used oil sample is tested to measure wear metals and contaminants. In practice, it helps identify abnormal engine wear, coolant or fuel contamination, and whether the oil is still doing its job.","simplifiedExplanation":"Oil analysis means testing a small sample of your used oil. It can show whether your engine is wearing normally or if something is contaminating the oil."}},{"startTime":229.8,"endTime":292.3,"type":"company","title":"Blackstone Laboratories","url":"/glossary/blackstone-laboratories","quote":"So let's do this just because people might be coming to this not ever having heard of Blackstone Labs before... Blackstone Laboratories has been in the oil analysis game since 1985.","canonicalId":"company:blackstone-laboratories","priority":0.9,"confidence":0.95,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"Blackstone Laboratories is a company that performs oil analysis—testing used oil samples to infer what’s happening inside an engine or other oil-filled systems. Their reports focus on interpreting wear metals and contamination so owners can make maintenance decisions based on evidence rather than guesswork.","simplifiedExplanation":"Blackstone Laboratories is a service that tests used oil. You send in a sample, and they look for signs of engine wear and contamination so you can understand what your car’s oil is telling you."}},{"startTime":275.1,"endTime":283.9,"type":"term","title":"metal content","url":"/glossary/metal-content","quote":"...help you out by explaining the sources of metal content, the signs of contamination, hopefully a lack thereof.","canonicalId":"term:metal-content","priority":0.5,"confidence":0.82,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"“Metal content” in oil analysis refers to the concentration of metals found in the used oil, which typically come from engine wear. Different metals can point to different wear sources (for example, bearings vs. cylinder components), helping interpret how hard the engine is working internally."}},{"startTime":296.48,"endTime":369.92,"type":"company","title":"Blackstone Labs","url":"/glossary/blackstone-labs","quote":"and Porsche definitely falls in that category, and we can assist owners that are interested, merely by sending us a sample size of three and a half ounces... when you guys do your oil inspections... you can put it up against the sample sets of thousands of other motors","canonicalId":"company:blackstone-labs","priority":0.9,"confidence":0.9,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"Blackstone Laboratories is a company that performs used oil analysis (UOA). They compare a customer’s oil sample results against large databases to help infer engine wear and potential issues.","simplifiedExplanation":"Blackstone Labs is a service that tests oil you’ve already used in your car. By comparing your results to lots of other engines, they can tell you whether your engine seems to be wearing normally or not."}},{"startTime":376.9,"endTime":380.7,"type":"term","title":"IMS issues","url":"/glossary/ims-issues","quote":"We're going to talk about IMS issues with the motors,","canonicalId":"term:ims-issues","priority":0.9,"confidence":0.9,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"IMS stands for Intermediate Shaft, a component in certain Porsche engines/transaxle setups. “IMS issues” typically means the intermediate shaft bearing can wear or fail, which may lead to expensive engine/transmission damage if not addressed.","simplifiedExplanation":"IMS is short for an intermediate shaft part inside some Porsche drivetrains. Some cars can have problems with a bearing there, and if it fails it can cause major damage."}},{"startTime":452.5,"endTime":456.9,"type":"term","title":"air cooled iteration","url":"/glossary/air-cooled-iteration","quote":"So if it's an air cooled iteration, we're going to have averages for that.","canonicalId":"term:air-cooled-iteration","priority":0.5,"confidence":0.85,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"“Air cooled iteration” refers to Porsche engines that rely primarily on airflow over the engine to manage temperature, rather than liquid coolant. In Porsche data discussions, separating air-cooled vs water-cooled engines matters because wear patterns and operating conditions differ.","simplifiedExplanation":"An “air-cooled” Porsche engine uses airflow to keep the engine cool. It’s important because the way the engine runs and wears can be different from water-cooled engines."}},{"startTime":574.5,"endTime":578.1,"type":"term","title":"bore scoring","url":"/glossary/bore-scoring","quote":"And there's also a worry about bore scoring. And this is something that I know I fret about and I fretted about because I got a bore scope check on my motor...","canonicalId":"term:bore-scoring","priority":0.9,"confidence":0.95,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"Bore scoring is damage (scuffing/grooving) that can occur inside an engine’s cylinder bores. It’s often discussed in relation to oiling and lubrication quality, because poor lubrication can increase metal-to-metal contact and accelerate wear.","simplifiedExplanation":"Bore scoring is when the inside walls of an engine’s cylinders get scratched or worn. It usually happens when the engine doesn’t have enough good lubrication, so metal starts rubbing instead of gliding."}},{"startTime":677.8,"endTime":686.0,"type":"term","title":"high aluminum, high iron, and high silicon","url":"/glossary/high-aluminum-high-iron-and-high-silicon","quote":"Porsche is unique in that we can see signs of bore scoring in the form of high aluminum, high iron, and high silicon. So when we see these three elements testing high together in these motors...","canonicalId":"term:high-aluminum-high-iron-and-high-silicon","priority":0.5,"confidence":0.82,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"High aluminum, iron, and silicon are used as chemical “signals” from engine testing to infer wear and contamination. In this case, the lab is saying Porsche engines can show bore scoring-related patterns when these elements test high together.","simplifiedExplanation":"They’re talking about lab results that measure tiny amounts of metals and particles. If aluminum, iron, and silicon are all high at the same time, it can point to a specific kind of engine wear or contamination."}},{"startTime":772.9,"endTime":783.6,"type":"concept","title":"trio of metals as a diagnostic pattern","url":"/glossary/trio-of-metals-as-a-diagnostic-pattern","quote":"The surefire signs because you can have one of these elements a little out of whack, but it takes that trio to really assume a problem of that nature.","canonicalId":"concept:trio-of-metals-as-a-diagnostic-pattern","priority":0.5,"confidence":0.85,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"The “trio” approach means using multiple wear indicators together (high aluminum + high iron + high silicon) rather than reacting to one outlier. This improves diagnostic confidence because single elevated values can occur for many benign reasons.","simplifiedExplanation":"Instead of panicking over one weird number in the oil, they look for a matching set of clues. When several metals are high together, it’s much more likely to mean a real internal wear problem."}},{"startTime":883.4,"endTime":888.3,"type":"concept","title":"track use","url":"/glossary/track-use","quote":"But I would also add that we're seeing a really wide range of ownership\nin the sense that we're seeing people who are interested in track use populate that\naverage file, people who are not, people who are strictly using their car in the gentlest manner,","canonicalId":"concept:track-use","priority":0.5,"confidence":0.8,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"“Track use” means driving the car in a high-load, high-heat environment where oil and cooling demands are greater. Track-driven cars can show different wear patterns and oil-analysis results than cars used gently for commuting.","simplifiedExplanation":"Track use is when you drive the car hard on a circuit. That puts more stress on the engine and oil, so the wear and oil condition can be different."}},{"startTime":900.2,"endTime":905.5,"type":"concept","title":"pre-buy samples","url":"/glossary/pre-buy-samples","quote":"We have people who are sending in pre-buy samples where they can't speak to how the motor is taking\ncare of. They can only tell us how they would take care of it.","canonicalId":"concept:pre-buy-samples","priority":0.5,"confidence":0.85,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"“Pre-buy samples” are oil samples taken before purchasing a used car to assess its condition. This helps buyers estimate whether the engine has been maintained well and whether there are signs of abnormal wear or contamination.","simplifiedExplanation":"Pre-buy samples are oil tests you do before buying a used car. They’re meant to help you judge how healthy the engine is and whether it was cared for."}},{"startTime":1042.7,"endTime":1055.5,"type":"concept","title":"wear profile","url":"/glossary/wear-profile","quote":"...down the road, it's not necessarily going to make a lot of metal as it ages either. Once you have that maintenance plan dialed in, and you have stable trends emerge...","canonicalId":"concept:wear-profile","priority":0.5,"confidence":0.8,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"A wear profile is the pattern of how an engine’s internal wear changes over time, often inferred from oil analysis trends and mileage. The speaker argues that with a good maintenance plan, wear trends stabilize rather than accelerating dramatically.","simplifiedExplanation":"A wear profile is basically how an engine’s wear changes as it gets more miles. The point here is that if you maintain the car well, the wear rate tends to stay predictable."}},{"startTime":1125.1,"endTime":1137.9,"type":"term","title":"oil passages","url":"/glossary/oil-passages","quote":"Maybe there is, you know, sealer that's been clogging oil passages that\nhasn't left the system. So it's nice to have that starting point, because we can track how\nthings have been evolving, or unfortunately, not evolving for some motors,","canonicalId":"term:oil-passages","priority":0.5,"confidence":0.8,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"“Oil passages” are the internal channels that route oil to lubricate and cool engine components. If sealant or debris clogs these passages, lubrication can be compromised, which may show up in oil-analysis trends.","simplifiedExplanation":"Oil passages are the internal routes that carry oil to the engine parts that need lubrication. If they get clogged, parts may not get enough clean oil."}},{"startTime":1182.1,"endTime":1194.9,"type":"term","title":"track time","url":"/glossary/track-time","quote":"You know, I think oftentimes when\nthere's been abrupt changes in operation, someone has modified power, they have done a significant\nincrease in track time. And it's led to some increases that we certainly want to keep an eye on.","canonicalId":"term:track-time","priority":0.5,"confidence":0.8,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"“Track time” refers to driving on a racetrack, which typically increases engine stress, heat, and sometimes oil contamination compared with normal street driving. The speaker links abrupt changes like increased track time to changes in oil-analysis results that should be monitored."}},{"startTime":1260.0,"endTime":1265.0,"type":"term","title":"track day","url":"/glossary/track-day","quote":"...but did you just do a track day? You know, are there any additives you can put in your oil to try to help maintain?","canonicalId":"term:track-day","priority":0.5,"confidence":0.8,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"A track day is an event where you drive your car on a circuit, typically pushing it harder than normal street driving. That can change oil temperature, fuel dilution, and wear patterns, which matters when interpreting oil analysis results.","simplifiedExplanation":"A track day is when you drive on a race track for fun. Because you’re pushing the car harder, the oil can look different afterward, so it’s not always a sign of a problem."}},{"startTime":1310.8,"endTime":1324.1,"type":"term","title":"used oil levels in the gray area","url":"/glossary/used-oil-levels-in-the-gray-area","quote":"...when you're in that gray area and we advise checking back, it means that we can allow some leeway.","canonicalId":"term:used-oil-levels-in-the-gray-area","priority":0.5,"confidence":0.8,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"“Gray area” refers to oil analysis results that aren’t clearly normal or clearly catastrophic. In that range, the recommendation is often to recheck later because operational factors (like track use or short trips) can temporarily affect readings."}},{"startTime":1385.6,"endTime":1390.32,"type":"concept","title":"direct fuel injection","url":"/glossary/direct-fuel-injection","quote":"...In 2009, Porsche came out with a direct fuel injected motor, and it would completely change","canonicalId":"concept:direct-fuel-injection","priority":0.5,"confidence":0.8,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"Direct fuel injection (DI) sprays fuel directly into the combustion chamber rather than into the intake tract. The speaker notes that Porsche introduced a direct-injected engine in 2009, which can change how the engine behaves and how oil analysis results should be interpreted.","simplifiedExplanation":"Direct fuel injection means the car sprays fuel straight into the engine’s combustion area. It can affect engine operation and how the oil behaves, so it matters when you’re analyzing engine health."}},{"startTime":1415.6,"endTime":1474.6,"type":"term","title":"percentage of samples","url":"/glossary/percentage-of-samples","quote":"Can you hit me with some numbers? ... the percentage is... when you look at starting with the 3.6 DFI, we're seeing that... in 1.31% of samples.","canonicalId":"term:percentage-of-samples","priority":0.5,"confidence":0.85,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"The episode repeatedly frames bore-scoring prevalence as a “percentage of samples,” meaning the fraction of inspected engines showing signs. This is a data-driven way to evaluate how common a problem really is, rather than relying on anecdotes.","simplifiedExplanation":"They’re using inspection results and turning them into percentages—how many cars show the wear signs out of the total checked. It’s meant to show whether the problem is common or rare."}},{"startTime":1461.9,"endTime":1474.6,"type":"term","title":"boar scopes","url":"/glossary/boar-scopes","quote":"Be very careful. Get boar scopes. It's a super issue. You're telling me that it's like a rounding error...","canonicalId":"term:boar-scopes","priority":0.5,"confidence":0.8,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"A “borescope” is an inspection tool used to look inside an engine’s cylinders through the spark plug or injector ports. In this episode, it’s used to detect bore scoring signs directly rather than relying on rumors.","simplifiedExplanation":"A borescope lets you look inside the engine cylinders without fully tearing the engine apart. It helps confirm whether there’s real cylinder wear."}},{"startTime":1665.1,"endTime":1699.5,"type":"concept","title":"1.35%","url":"/glossary/1-35","quote":"...What about the 3.8 liter motor in the 991s? Yeah, so the 3.8, we're only looking at a rate of 1.35%.","canonicalId":"concept:1-35","priority":0.5,"confidence":0.8,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"The hosts cite “1.35%” as the bore-scoring rate for the 3.8L 991-era engine. This provides a quantitative comparison against earlier claims that the 991 engines were similarly affected.","simplifiedExplanation":"They’re quoting another specific risk number: 1.35%. The point is to show the 3.8L version’s bore-scoring rate is still relatively low."}},{"startTime":1951.3,"endTime":1955.9,"type":"term","title":"viscosity","url":"/glossary/viscosity","quote":"if you're buying an API certified product with the correct viscosity, you can bank on it providing the necessary wear protection.","canonicalId":"term:viscosity","priority":0.9,"confidence":0.95,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"Viscosity is a measure of how thick or thin an engine oil is, and it strongly affects lubrication across different temperatures. Matching the correct viscosity to your owner’s manual helps ensure the oil flows properly on cold starts and maintains protection when the engine is hot.","simplifiedExplanation":"Viscosity is basically how thick the oil is. Your car’s manual specifies the right thickness so it can protect the engine in both cold and hot conditions."}},{"startTime":2586.9,"endTime":2606.2,"type":"term","title":"oil testing","url":"/glossary/oil-testing","quote":"...you want to know how that oil looks in testing regardless of who you are, what car you have, because how that oil looks in testing could dictate whether or not that oil change interval needs to be shorter...","canonicalId":"term:oil-testing","priority":0.5,"confidence":0.84,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"Oil testing (often via used-oil analysis) checks the oil’s condition and contamination levels to help decide if an oil change interval should be shortened. The host argues that oil test results can be more informative than relying on the calendar, especially before storage.","simplifiedExplanation":"Oil testing means sending or checking used oil to see how healthy it still is. The idea is to use the results to decide whether you really need an oil change, rather than just guessing by time."}},{"startTime":2619.3,"endTime":2624.3,"type":"term","title":"coolant leak","url":"/glossary/coolant-leak","quote":"...but it's another one of those things that's not a common problem because you're only going to have moisture build up in a modern engine if it has a coolant leak.","canonicalId":"term:coolant-leak","priority":0.5,"confidence":0.86,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"A coolant leak can allow engine coolant to enter the combustion chambers or the crankcase, which may show up as moisture/contamination in the oil. The host connects moisture buildup in oil to coolant leaks rather than normal air exposure in modern engines.","simplifiedExplanation":"A coolant leak means the engine’s antifreeze isn’t staying where it should. If coolant gets into the engine oil, it can cause oil contamination and wear."}},{"startTime":2744.6,"endTime":2751.6,"type":"concept","title":"oil breaking down from its job of cleaning and lubricating","url":"/glossary/oil-breaking-down-from-its-job-of-cleaning-and-lubricating","quote":"...miles are where we see that metal accumulated. That's where we see the oil actually breaking down from its job of cleaning and lubricating.","canonicalId":"concept:oil-breaking-down-from-its-job-of-cleaning-and-lubricating","priority":0.5,"confidence":0.84,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"This describes how engine oil degrades in service: it loses effectiveness as it accumulates contaminants and as additives are consumed. The segment frames mileage as the main driver of when oil stops protecting the engine.","simplifiedExplanation":"As you drive, the oil picks up dirt and the protective chemicals get used up. Eventually it can’t clean and protect as well as it used to."}},{"startTime":2773.5,"endTime":2781.1,"type":"term","title":"TBN","url":"/glossary/tbn","quote":"...the TBN that we test would show active add have left. Now, those samples may not have had a ton of mileage, but that's the point.","canonicalId":"term:tbn","priority":0.5,"confidence":0.9,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"TBN (Total Base Number) is a measure of an oil’s reserve alkalinity—its ability to neutralize acids formed during combustion and blow-by. In oil analysis, a declining TBN indicates the oil’s additive protection is being used up.","simplifiedExplanation":"TBN is a test that shows how much “acid-fighting” ability your oil still has. When TBN drops, the oil is less able to protect the engine from corrosive byproducts."}},{"startTime":2884.5,"endTime":2895.2,"type":"term","title":"vacuum pump from the dipstick","url":"/glossary/vacuum-pump-from-the-dipstick","quote":"But people don't even have to do a full oil change if they want to take a sample with a vacuum pump from the dipstick and don't change it.","canonicalId":"term:vacuum-pump-from-the-dipstick","priority":0.5,"confidence":0.85,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"Using a vacuum pump to extract oil from the dipstick is a practical way to collect an oil sample without doing a full drain and refill. It reduces mess and can be cheaper than a complete oil change when you’re mainly trying to get peace of mind from analysis.","simplifiedExplanation":"This is a tool that pulls a small amount of oil out through the dipstick. It lets you get a sample without draining all the oil first."}},{"startTime":2963.8,"endTime":2968.8,"type":"term","title":"dipsticks","url":"/glossary/dipsticks","quote":"Of course, the smart people out there are like, well, Derek, Porsche did away with dipsticks quite some time ago. And so would you feel comfortable opening up the oil cap and taking a sample from there?","canonicalId":"term:dipsticks","priority":0.5,"confidence":0.85,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"A dipstick is the traditional tool used to check engine oil level by pulling it out and reading the oil mark. Some modern engines (including certain Porsche applications) move away from dipsticks, which affects how you access oil for sampling.","simplifiedExplanation":"A dipstick is the stick you pull out to see if the engine has enough oil. Some newer cars don’t use one, so you may have to sample oil another way."}},{"startTime":3043.7,"endTime":3054.5,"type":"term","title":"midstream sample","url":"/glossary/midstream-sample","quote":"if you're in an ideal situation during an oil change, just waiting for a midstream sample that is not so far towards the end, you miss the drain and not right at the beginning where you can get some debris.","canonicalId":"term:midstream-sample","priority":0.5,"confidence":0.83,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"A midstream sample is taken after the initial oil has drained and before the last oil comes out, aiming to avoid debris near the drain plug and dilution effects near the end. The speakers describe it as the “picture perfect” approach for more consistent oil analysis."}},{"startTime":3072.8,"endTime":3079.75,"type":"term","title":"pleats","url":"/glossary/pleats","quote":"I used to have a guy that I knew that religiously would, when he changed his oil, he pull off his oil filter, cut it open, he'd inspect all the pleats, pleat by pleat, to see if there's","canonicalId":"term:pleats","priority":0.2,"confidence":0.7,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"Pleats are the folded layers inside an oil filter that increase surface area for trapping contaminants. Inspecting pleats “pleat by pleat” is an enthusiast technique to look for trapped debris patterns that may correlate with wear or contamination sources."}},{"startTime":3116.9,"endTime":3140.1,"type":"concept","title":"visible metal","url":"/glossary/visible-metal","quote":"we can of course check it for visible metal and identify the metallurgy... But that's really something that... you can do on your own far cheaper.","canonicalId":"concept:visible-metal","priority":0.5,"confidence":0.85,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"Visible metal in oil or a filter indicates that wear debris is large enough to be seen, which typically correlates with more advanced damage. The lab notes it can be evidence of a problem, but oil sampling can detect much smaller, earlier wear particles."}},{"startTime":3174.7,"endTime":3210.3,"type":"term","title":"oil sample","url":"/glossary/oil-sample","quote":"But I think it's something that in general, you can rest on an oil sample telling you the essentials. If you're driving a car, that's really going to be your go to for most everything.","canonicalId":"term:oil-sample","priority":0.9,"confidence":0.92,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"An oil sample is a small amount of used engine oil sent to a lab to analyze wear metals, contamination, and oil condition. It’s commonly used to catch problems early—often before they show up as obvious debris in the engine or filter.","simplifiedExplanation":"You take a little used oil and send it to a lab. They look for tiny metal particles and other signs of wear, so you can spot engine problems early instead of waiting for something to break."}}],"speakers":[{"id":"s1","name":"Derek","role":"host"}],"transcripts":[{"url":"http://getcarcurious.com/episodes/bore-scoring-is-a-myth-blackstone-labs-porsche-data-revealed-719d793e-8fc7-473b-8930-d0a6b401de8e/transcript.vtt","type":"text/vtt"}]}