Your Porsche Is Dying In The Garage (And You're Helping It)

The host is describing a lubrication principle: many automotive fluids (especially engine oil and transmission fluids) need periodic movement to maintain proper lubrication and reduce the risk of issues from long-term sitting. When fluids circulate, they help keep internal components coated and can reduce corrosion risk.

Flat spotting is when a tire develops a noticeable “flat” area because it sits under load for too long. The rubber can take a set, and the ride may feel uneven until the tire warms up and reshapes.

A vehicle battery can degrade when it sits for long periods because it naturally self-discharges and may not reach the ideal charge state. The host also notes that even with a battery maintainer, the battery benefits from some cycling—discharge and recharge—rather than staying indefinitely at a fixed voltage.

A battery maintainer is a device that keeps a parked car’s battery charged by supplying a controlled trickle/float charge. The host’s point is that maintainers aren’t the same as real charging from driving: the battery may still prefer some discharge and recharge, and long-term “stasis” can be counterproductive.

The alternator is the engine-driven generator that powers the car’s electrical system and recharges the battery while you drive. In this discussion, it’s referenced as the source of the “recharge” the battery needs when the car has been sitting.

A lead-acid battery is the common 12-volt battery type used in many cars. It stores energy using lead plates submerged in battery fluid (electrolyte), and the fluid level matters because it affects how well the plates can conduct electricity.

A voltage drop is when the electrical system’s voltage falls below what the car’s electronics expect, often during starting or heavy electrical load. Modern cars—especially Porsche models with lots of sensors and control modules—can behave oddly or throw faults if the voltage dips too far, even if the battery still shows a “reasonable” resting voltage.

A “12-volt battery” refers to the standard nominal voltage of most car starting batteries. The key point here is that a battery can read around 12.5 volts at rest, but still be unable to deliver enough power under load to crank the engine.

The Chevrolet Volt is a plug-in hybrid that uses an electric drive system for everyday driving, with a gasoline engine that can generate electricity when the battery is depleted. It’s frequently mentioned in discussions about advanced electronics and battery management because it relies on software to coordinate charging, power delivery, and engine operation. In a podcast context, it can come up when talking about unusual electrical readings or diagnostic codes.

Amperage (current) is how much electrical power the battery can deliver when the starter motor demands it. A battery can show “good” voltage on a voltmeter but still fail to crank if its amperage output is too low due to internal issues like sulfation, low electrolyte, or damaged plates.

Cold cranking amps (CCA) is a battery rating that measures how much current a battery can deliver while the engine is being cranked in cold temperatures. It matters because starting requires a big electrical “push” to spin the starter and crank the engine when everything is harder to move in the cold.

A battery tender is a charger/maintainer that keeps a car’s battery at an appropriate charge level while the car sits. Instead of overcharging, it uses a controlled charging strategy so the battery stays ready for starting after storage.

After you start a car, the starter draws a large current from the battery. The battery then needs time to recharge back to a “healthy” state, which is why short idling or repeated starts can leave it undercharged.

The starter is the electric motor that cranks the engine during ignition. It draws a big electrical load from the battery, which is why the battery may need time (and driving) to recharge afterward.

Catalytic converters (often shortened to “cats”) are emissions devices that reduce harmful exhaust gases. They need to reach operating temperature quickly, and the episode describes a cold-start strategy that helps heat them up faster.

A cold start is when the engine is started while it’s still at low temperature, so fuel burns less efficiently at first. The episode explains that Porsche uses extra fuel during cold start to help get the catalytic converters up to temperature quickly.

The oil protective layer is the thin film of engine oil that coats cylinder walls and moving parts to reduce friction and prevent wear. If fuel wash or long storage removes that film, the engine can start with insufficient lubrication, increasing the risk of cylinder wear.

RPMs (revolutions per minute) are a measure of engine speed. In this discussion, the host ties a specific RPM range to a change in valve lift behavior—meaning the engine’s breathing characteristics shift as RPM increases.

“Low lift to high lift” refers to a variable valve lift system changing how far the intake/exhaust valves open. At lower RPMs the engine uses smaller valve opening for efficiency, then switches to higher lift at higher RPMs to improve airflow and power—something that can be shown on a dyno chart.

A dyno chart is a graph from a dynamometer that shows how an engine performs under controlled load. It typically plots power and/or torque versus engine speed (RPM), so you can see where the engine makes power and where it falls flat.

The oil temp gauge measures engine oil temperature, which matters because oil needs heat to flow properly and protect the engine. The advice here is to avoid higher engine loads until the oil reaches a safe operating temperature (around 90°C / 194°F).

“Washout on the cylinder walls” describes how fuel and/or oil can fail to stay properly lubricating the cylinder surfaces during cold operation or low-load running. When the cylinder walls aren’t lubricated correctly, it can increase wear and contribute to oil consumption or other issues.

“Lugging your engine” is when you’re asking the engine to pull a load (like a hill) while it’s running at relatively low RPM for that situation. Instead of downshifting to keep RPM in a healthier range, the driver adds throttle and the engine responds by increasing fuel delivery to maintain RPM and accelerate.

Downshifting is selecting a lower gear so the engine spins faster (higher RPM). That helps the engine produce more torque at the wheels for climbing, instead of relying on heavy throttle while the engine is lugging.

In this context, “throttle” refers to the driver’s request for engine power, which the ECU translates into changes in air intake and fuel delivery. More throttle during lugging increases fuel injection to help the engine accelerate and keep RPM from dropping.

A “fuel injection strategy” is the engine computer’s plan for how much fuel to inject and when, based on conditions like throttle position, load, and RPM. When lugging, the ECU may increase fuel delivery (“dump more gas”) to keep RPM from falling and to regain acceleration.

Bore scoring is damage (scoring/grooves) in the cylinder walls of an engine. On some Porsche flat-six engines, it can progress until it affects combustion, leading to symptoms like misfires.

The Porsche 997.2 is the 911 facelift generation where Porsche changed the engine architecture and adopted direct fuel injection (DFI). In this episode, the guest says they have scoped 997.2 engines and found bore scoring severe enough to require major work.

The IMS issue refers to failures involving the Intermediate Shaft (IMS) bearing in certain Porsche flat-six engines. It became a well-known concern among 911 owners, and the episode notes that people expected later engine changes to remove that risk.

“MA-01” is an internal engine designation used to identify a specific Porsche engine variant. In this episode, the guest says the scoped 997.2s correspond to the MA-01 engine, tying bore scoring to a particular engine build.

A misfire is when an engine cylinder fails to ignite the air-fuel mixture properly. The episode connects misfires to advanced bore scoring, where cylinder wall damage can disrupt combustion.

A bore scope is a small inspection camera used to look inside an engine cylinder through the spark plug or injector opening. Here it’s used to confirm bore scoring and visualize cylinder wall damage before deciding on further teardown.

“Pull the engine, fully disassemble” describes the diagnostic and repair escalation when inspection confirms internal damage. In this episode, Porsche requires full teardown if bore scoring is severe enough to catch a fingernail on the cylinder wall.

The Porsche 356 is an early Porsche sports car and one of the brand’s foundational models. It’s often discussed because its construction and development reflect the company’s early, hands-on approach to making lightweight, durable performance cars. In a podcast about Porsche culture, it’s a key reference point for how the marque’s identity formed.

“Bore scoring” refers to scuffing or wear marks inside an engine’s cylinder bores (the walls the piston rings ride on). It’s a problem worth checking for on certain Porsche 911 engines because it can indicate abnormal wear and may affect compression and oil control.

“Cylinder five” is a specific cylinder in the engine (the fifth one in the firing order/numbering scheme). Calling out one cylinder suggests uneven wear or localized damage, which can be important when diagnosing issues like bore scoring.

“Lickl Mali MLS2” is an oil additive they mix into the engine oil. In this discussion, it’s used to raise the oil’s molybdenum content to improve lubrication under track conditions.

“AMSOIL 550” refers to an oil viscosity grade used for Porsche track use. The “50” indicates a high-temperature viscosity rating, chosen to stay thick enough under heat and high load.

“5W50” is an engine oil viscosity grade: the “5W” relates to cold-start behavior, and the “50” relates to how thick it remains at high operating temperatures. They start the weekend with 5W50 because track heat and stress will reduce viscosity over time.

“0W40” is a viscosity grade Porsche specifies as the oil that works best for the engine in question. The “0W” indicates excellent cold-flow characteristics, while “40” is the high-temperature viscosity Porsche targets.

Molybdenum is a lubrication additive element used to reduce friction and wear. Here, they say the MLS2 additive increases molybdenum levels in the oil, aiming for much higher parts-per-million than typical off-the-shelf motor oils.

“Parts per million” (ppm) is a way to describe very small concentrations of additives mixed into oil. In this context, the hosts are talking about dialing in the additive concentration so the oil performs consistently for wear protection and chemistry.

Driven is the oil brand the hosts are discussing, specifically a 5W40 product they claim matches the right additive chemistry for their test targets. They also mention track-car use and sample-based verification.

5W40 is an oil viscosity grade that describes how thick the oil is at cold temperatures (the “5W” part) and at operating temperature (the “40” part). The hosts are recommending a specific 5W40 formulation for track use.

DT440 is the specific Driven motor oil grade/model the hosts say has the right additive concentration and “doesn’t move” in their testing. They’re presenting it as a proven, repeatable choice rather than something you’d need to custom-mix yourself.

Baselining means starting from a known, documented condition so you can measure how changes affect the car over time. In this episode, the host describes refreshing fluids to establish a “ground zero” reference point for monitoring wear and changes.

Checking through the spark plug holes is an inspection method where a borescope camera is inserted into the cylinder via the spark plug opening. It lets you visually inspect the cylinder walls for signs of wear like bore scoring without fully disassembling the engine.

The sump is the lowest part of the engine where oil collects. Accessing the engine “through the sump” typically means getting to internal components from underneath, which can change how you inspect wear patterns and what tools/angles you need.

Spark plugs are the ignition components that create the spark to ignite the air-fuel mixture in each cylinder. When doing deeper inspection work, replacing spark plugs at the same time can reduce the chance you’ll have to reopen the engine later.

Ignition coils generate the high voltage needed to fire the spark plugs. If you’re already accessing the top of the engine, swapping coils can be a “while-you’re-in-there” service to improve ignition consistency.

A wear pattern describes how damage or wear varies across a component’s surface. Here, the speaker notes that the base of the cylinder can wear differently than the top, which is why inspecting “top to bottom” can reveal issues like bore scoring earlier.