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Car scans and codes, cooling your car, tires in the rain and more!

Car scans and codes, cooling your car, tires in the rain and more!

WCCO's Car Care Jun 13, 2026 27 min
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About this episode

Listeners call in about pothole damage, a battery that died suddenly, and tires that fail from dry rot or age. The tech explains how freeze-thaw creates potholes, why excess battery drain points to an electrical issue, and how to read tire date codes. The show also covers cabin filter replacement, sticking to a 5,000-mile oil interval to prevent sludge, and common transmission service methods. For infrequently driven cars, it recommends warming up to burn off moisture, plus yearly wiper blade checks.

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Technical Too Afraid to Ask
Car

2019 Nissan Altima

"thank you the two-year-old battery on my 2019 Nissan Altima abruptly died yesterday [235.0s] triple a came out said it was a defective battery"

This is a Nissan Altima from 2019. The host is talking about a battery that died very quickly, and they’re suggesting the car’s charging system and any “battery drain” while parked should be checked.

Term

charging system

"I would probably have an electrical systems test done check the charging system including the alternator [265.7s] check for any kind of drain from the system when the car is off"

The charging system is what recharges your battery when the car is running. If it’s not charging properly, a battery can fail much sooner than expected.

Term

alternator

"check the charging system including the alternator [265.7s] check for any kind of drain from the system when the car is off"

The alternator is the part that makes electricity while the engine is running. If it doesn’t charge the battery correctly, the battery can go dead quickly.

Term

drain

"check for any kind of drain from the system when the car is off when you shut [269.5s] your vehicle off after a few minutes"

Battery drain means something in the car keeps using electricity after you turn it off. If that “something” pulls too much power, the battery can die even if it’s new.

Term

draw test

"so I think it's fair to say would probably you know if you don't not [293.2s] notice anything else have something to do a draw test make sure there's not [296.5s] something going on that you're not aware of all right"

A draw test checks how much electricity your car is still using when it’s turned off. If it’s using too much, that can explain why a battery dies early.

Concept

gas to hybrid to electric

"we get especially over the last couple years as manufacturers go from [305.6s] gas to hybrid to electric listen I want to know electric vehicles"

The host is talking about how car powertrains are changing over time: gas cars, then hybrids, and now fully electric cars. That matters because the parts that can fail—and how you test them—are different.

Term

hybrid batteries

"we haven't had to replace one of those we've replaced the hybrid [326.3s] batteries but we haven't done a full EV battery yet"

Hybrid batteries are the batteries in a hybrid car that help the gas engine and run the car’s electric parts. The host says they’ve had to replace hybrid batteries, but not yet full EV batteries.

Term

EV battery

"we haven't done a full EV battery yet you know they're still too [329.9s] new I imagine when they get into that 10 15 year age range we might start seeing"

An EV battery is the big battery in an all-electric car that powers the motor. The host is saying they haven’t had to replace many yet because the cars are still newer, but it should happen more as they get older.

Term

10 15 year age range

"I imagine when they get into that 10 15 year age range we might start seeing"

The host is basically saying that battery problems usually show up more after cars have been on the road for about 10 to 15 years. That’s when more replacements and repairs become likely.

Term

carburetors

"they have the testing have evolved with cars you know going from carburetors to fuel injection electronic ignition hybrids EV"

A carburetor is an older way of mixing fuel and air for the engine. Newer cars usually use fuel injection because it can control the mixture more accurately.

Term

fuel injection

"they have the testing have evolved with cars you know going from carburetors to fuel injection electronic ignition hybrids EV"

Fuel injection is how most modern cars deliver gas to the engine using electronic controls. It helps the car get the right amount of fuel for different driving conditions.

Term

electronic ignition

"they have the testing have evolved with cars you know going from carburetors to fuel injection electronic ignition hybrids EV"

Electronic ignition is the system that controls when the spark plugs spark. It’s more precise than older ignition systems and helps the engine run better.

Term

EV

"fuel injection electronic ignition hybrids EV so as as technology changes in the vehicles the testing and the training that we take involves with that"

EV means electric vehicle. Instead of a gas engine doing most of the work, it runs mainly on an electric motor powered by a battery.

Term

hybrids

"fuel injection electronic ignition hybrids EV so as as technology changes in the vehicles the testing and the training that we take involves with that"

A hybrid uses both a gas engine and an electric motor. The car manages both together, so it needs different diagnostics than a purely gas car.

Concept

master technician

"do you still kind of keep up on everything I mean you still make it a point to keep your your level of master technician up there I'm actually I think I'm due"

A master technician is a top-level mechanic certification. It usually means the person has proven they can diagnose and fix complicated issues, and they may need to retest over time.

Term

dry rotting

"we inspect the tires you notice that tire compound starts to dry out of structures and cracking in there and the crackings deep enough to create a failure so if we see anything like that we're gonna say hey based on the age of the tires there is tread but there's some what we call dry rotting and the cracking in the tire we want to replace those before we have a failure"

Tires can age even if they still have tread. The rubber can get hard and crack from heat and time, and that can eventually cause a tire to fail.

Term

tire compound

"we inspect the tires you notice that tire compound starts to dry out of structures and cracking in there and the crackings deep enough to create a failure"

A tire is made from rubber, and that rubber has a specific recipe. With age and heat, that rubber can get stiff and crack even if the tread still looks okay.

Term

flat tire

"we want to replace those before we have a failure and you end up with a flat tire"

A flat tire is when the tire goes low on air. If the rubber is cracking from age, it can fail and cause the tire to go flat.

Term

tread depth

"they do check the tread depth which is like this is the obvious answer but they do say you know this this tire is discolored or they'll say there's"

Tread depth is how much pattern is left on the tire. More tread helps the tire grip and push water out, especially on wet roads.

Term

date code

"some cracking in there and there's a date code when that tire was manufactured it'll be a the week in the year and then the last two years it was made"

Tires have a stamped number on the sidewall that shows when they were made. It usually includes the week and year, so you can tell if the tire is getting old.

Concept

visual inspection

"you do a little a little assessing a quick visual inspection and you know give people advice"

A visual inspection is just looking closely at the car parts to spot obvious problems. It’s often the first step before deciding whether something needs replacement or a closer check.

Term

OEM

"is there a big difference between OEM parts and non OEM parts what do you recommend tell our listeners what those what's that mean OEM the original equipment manufacturer"

OEM means the part was made for the car brand to match the car’s original specs. Sometimes OEM is the safest choice, but some aftermarket parts are just as good.

Term

cabin filter

"all right listener wants to know is there a timeframe when to change a cabin filter actually it's two part question and he wants to know can they also be vacuumed there's a maintenance schedule we will inspect them when we do service"

A cabin filter is a small filter inside your car that cleans the air coming into the cabin. When it gets dirty, it can’t filter as well anymore. How often you replace it depends on things like dust and nearby trees.

Term

pleating material

"vacuum or shake it amount it gets a lot of the loose stuff but I do believe the the stuff that gets caught up in the the pleating material it's kind of like your furnace filter at home"

Cabin filters use pleated media—folded layers that create more surface area to trap particles. The hosts’ point is that while vacuuming or shaking can remove loose debris, particles embedded in the pleats may not come out, which is why replacement is often the better option. This is especially true once the filter is loaded and airflow is affected.

Term

aftermarket

"I've used both I've used what quote OEM and aftermarket what about cabin filters there's so many on the market I've used both I've used what quote OEM and aftermarket"

Aftermarket parts are made by companies besides the original automaker. They’re sold as alternatives to the factory part. With filters, some aftermarket ones work great and some don’t, so quality can vary.

Term

fitment

"usually with like the cabin filters it's a lot about fitment a lot of times in [796.5s] aftermarket or you know they try to find two or three make them into one part"

Fitment just means whether a part actually fits your car the way it’s supposed to. With aftermarket parts, the shape or mounting can be slightly off, which can cause leaks or poor performance.

Term

oil filter

"so we get the appropriate number the appropriate part [811.9s] like it's an oil filter same thing you know that the quality might be a dollar [816.0s] or two more for the better filter but your engine greatly appreciates it"

The oil filter cleans the oil as it circulates through the engine. Better filters can trap more dirt, which helps the engine stay protected.

Term

good quality oil

"your engine greatly appreciates it [821.4s] along with the quality oil you don't want you know this it's funny how we get [825.1s] kind of hung up on trying to you know pricing out an oil change"

Engine oil does more than keep things from rubbing—it also helps keep the engine cool and clean. Using the right, high-quality oil helps prevent buildup that can damage the engine.

Term

sludge

"I always wonder about the the dirt the carbon the things that creates sludge [874.3s] because to be honest some of the biggest things that we see now or mechanical"

Sludge is gunky buildup inside the engine that forms when oil gets dirty or breaks down. It can clog oil passages and lead to faster wear.

Term

camshafts

"some of the biggest things that we see now or mechanical [877.5s] repairs related to oil oil related issues camshafts sludging up you know"

Camshafts are part of the engine that control when the valves open and close. They need good oil to stay lubricated and avoid wearing out too quickly.

Term

turbos

"camshafts sludging up you know [884.9s] turbos have the you know that with the lighter weight oils the supports that [888.2s] the oil needs to flow through are very small"

A turbocharger boosts the engine by using exhaust gases to spin a turbine. It depends on clean oil flowing correctly, so dirty oil can cause problems.

Term

lighter weight oils

"turbos have the you know that with the lighter weight oils the supports that [888.2s] the oil needs to flow through are very small and that starts to get gummed up"

“Lighter weight” oil is thinner and flows more easily. The worry is that if the oil gets dirty or forms sludge, it can still clog small oil passages and cause trouble.

Term

5,000 mile interval

"we stand behind the 5,000 mile interval and the vehicles that may be tended not be maintained like they they should they go those longer oil change intervals"

This is how often you’re supposed to change your engine oil. If it’s set to every 5,000 miles, going much longer can let the oil get worn out and stop protecting the engine as well.

Concept

longer oil change intervals

"they should they go those longer oil change intervals whether it's intentional or unintentional over the years we've seen where that damage can become very costly"

If you wait longer than recommended to change the oil, the oil gets dirty and less effective. That can cause extra engine wear and, in bad cases, an engine breakdown.

Term

engine failed

"folks had a vehicle that they bought that they never changed oil and it goes around 26 27,000 miles when the engine failed"

“Engine failed” means the engine stopped working properly, sometimes permanently. In the example they gave, it happened after the oil wasn’t changed for a very long time, so the engine didn’t get the protection it needed.

Concept

maintaining the vehicle is required to keep that warranty intact

"maintaining the vehicle is required to keep that warranty intact so unfortunately he thought that she didn't she thought that he did and no one did"

Warranties often only pay if you take care of the car the way the manufacturer says. If you skip required maintenance—like oil changes—they may refuse to cover the repair.

Term

oil left

"what is that if there's any oil left what does it look like after all this time if we'll see we'll see it"

They’re basically asking what the oil looks like after it’s been left too long. If it’s been neglected for a huge number of miles, it can be so worn out and dirty that it no longer protects the engine.

Concept

oil flushing vs loosening buildup

"the scary part is how [1026.1s] do you combat that you know we you know I'm not a big proponent of like putting [1029.3s] some chemicals to clean it because you're gonna loosen up a lot of stuff and [1031.9s] plug up morphine so we just try"

If an engine has a lot of gunk, using strong cleaners can sometimes break that gunk loose all at once. That can clog the oil system, so the safer approach is often to change the oil more frequently instead of dumping in chemicals.

Term

synthetic oil

"we're gonna use a [1036.8s] high quality synthetic oil we're gonna have you come back every thousand miles"

Synthetic oil is a higher-tech type of engine oil. It tends to last longer and hold up better, which can help if your oil has been getting dirty or breaking down.

Term

every thousand miles

"we're gonna use a [1036.8s] high quality synthetic oil we're gonna have you come back every thousand miles [1039.6s] to the next perceivable time you know maybe we're gonna change it"

They’re talking about changing the oil very often—about every 1,000 miles. The idea is that frequent fresh oil helps pull out dirt and sludge over time.

Brand

ASC certified technician

"welcome back to our car care show Danny all here along with ASC certified [1089.0s] technician Nick Stalfel from Lloyd's on the motor."

This means the technician has been certified through an automotive training program. It’s a way of saying they’re qualified to work on cars.

Company

Lloyd's

"technician Nick Stalfel from Lloyd's on the motor. Nick I forgot to ask you for [1093.6s] those that need the help from Lloyd's how do we find you guys"

Lloyd’s is the automotive shop the technician works with. They’re the place you can call or visit for help with car-care questions.

Place

982 Grand Avenue

"if you're in St. Paul ever and this warm [1109.6s] weekend or next week we're at 982 Grand Avenue stop and say hi if you need more [1115.1s] information you can check our website which is Lloydsautomotive.net very good"

That’s the street address where the shop/show team will be. It’s for people who want to stop in and say hi.

Term

transmission fluid

"Tim calling in from Andover I believe this morning Tim thanks for waiting what is your question for Nick? Question is I bought a used car and I don't have any maintenance on it but transmission fluid can you tell by looking at it if there's a need to change it?"

Transmission fluid is the fluid that keeps your car’s gearbox working smoothly. If it looks dark/discolored or smells burnt, it can be a sign the transmission has been running too hot or isn’t healthy, and it may need service.

Term

flushes

"most commonly now is what we see is a drain infill system they used to be like we talked in the past used to have flushes and even some cases there were some transmissions can remove the pan replace the filter"

A flush is a more aggressive fluid change where the system is cleaned out more forcefully than a simple drain-and-fill. Some transmissions don’t like that approach, so many shops use drain-and-fill more often now.

Term

remove the pan replace the filter

"and even some cases there were some transmissions can remove the pan replace the filter a lot of that's changed so the most common service is a drain infill"

On some transmissions, the shop can take off the bottom pan to reach the filter. Then they replace the filter (and usually the gasket) so the transmission fluid can flow through a clean filter again.

Term

flat spot

"Nick from a listener who said can tires thump while in motion if they have a flat spot after sitting for a while haven't thought about that in years. Does that still happen?"

A flat spot is when a tire sits in one position long enough that part of the tread gets a little deformed. When you drive again, it can feel like a thump or vibration until the tire warms up and the shape returns.

Term

tailpipe

"you know when you see a car freshly started you'll see how there's a big steam cloud come out the tailpipe and after once it's fully warmed up that's gone"

The tailpipe is where the car’s exhaust comes out at the back. On a cold start, the exhaust can look like steam because moisture is coming out—after the car warms up, it usually goes away.

Term

brake rotors

"and same with the brakes you want to get on the highway and heat those up keep those brake rotors good and clean"

Brake rotors are the round metal parts the brake pads squeeze against. Warming them up helps keep moisture from sitting on them and causing rust.

Term

tire alignment

"doing a tire alignment what are your thoughts texture wants to know you know it's good maintenance we will recommend for replacing tires and they are worn abnormally"

Tire alignment is setting the wheels so they’re pointed the right way. If it’s off, your tires can wear unevenly, even if they’re brand new.

Term

abnormally

"we will recommend for replacing tires and they are worn abnormally we want to get a figure out why because the last thing you want to do is install brand new tires and have them come prematurely worn"

Here, “abnormally” means the tires are wearing in a weird or uneven way. That usually suggests there’s an underlying problem, not just normal driving wear.

Term

alignment repair

"you don't want to waste your money to have something prematurely wear out and [1424.9s] still have to perform whatever alignment repair that was needed so if the tires"

Wheel alignment is how your wheels are aimed. If it’s wrong, your tires can wear unevenly and you may need new tires sooner. Fixing alignment helps tires last longer and keeps the car driving straight.

Term

alignment specifications

"well those situations are make us think maybe we [1444.7s] should measure the alignment specifications see what see what they're [1447.6s] at to maybe make those adjustments so it's not a have to do a thing but it's"

Alignment specifications are the exact numbers a shop tries to set your wheels to. Checking them tells you if your car’s wheels are aimed correctly or if they need adjustment to protect your tires.

Term

wiper blades

"as you know Nick we talk about changing wiper blades but a listener [1459.9s] wants to know how personally how often do you change your wiper blades I think"

Wiper blades are the rubber parts that clear your windshield. If they get old, they can start streaking and you won’t see as well in rain or snow.

Concept

clear windshield

"if it's raining or snowing and that you know having a clear windshield is [1493.7s] priceless you know you can't dispense those extra few dollars to get a set of [1497.1s] wiper blades every year maybe every"

A clear windshield means you can see the road clearly through the glass. In rain or snow, worn wipers can blur your view, so replacing them helps you stay safer.

Term

stable

"should you use stable tell us what that is and should you use it ... it kind of keeps the fuel from breaking down ... it definitely makes a lot easier to start them up"

“Stable” is a product you add to gas when you’re storing a vehicle for months. It helps keep the gas from going bad, so the engine is easier to start again in the spring.

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