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"Cooling System Neglect: The Silent Killer That Destroys Engines"

"Cooling System Neglect: The Silent Killer That Destroys Engines"

Car Connection Workshop Dec 29, 2025 39 min
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About this episode

Neglecting your vehicle's cooling system can lead to catastrophic engine damage, and Dyle Motor Mile Jenkins dives deep into this often-overlooked topic. With humor and expertise, he outlines the importance of regular maintenance, warning listeners about the dangers of believing in 'maintenance-free' vehicles. The episode features practical tips on monitoring temperature gauges, understanding electrolysis, and the consequences of mixing coolant types. Jenkins emphasizes the need for proactive care to avoid costly repairs and shares insights from his extensive experience in automotive service.

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Technical Too Afraid to Ask
Part

3.8 liter Chevy engine

"Um, they were, they were the 3.8 liter Chevy engine. And that thing was bulletproof."

The 3.8 liter Chevy engine is a type of engine made by Chevrolet. It's known for being very reliable and was used in many cars.

Term

Chevy 350 cubic inch engine

"that engine was designed after the Chevy 350 cubic inch engine with the back two cylinders lopped off"

The Chevy 350 is a popular engine made by Chevrolet. It's a V8 engine, meaning it has eight cylinders, and is known for being powerful and used in many cars.

Term

V6 engine

"it was designed after the Chevy 350 cubic inch engine with the back two cylinders lopped off because it was a V six."

A V6 engine is a type of engine that has six cylinders arranged in a V shape. It's smaller than some other engines but still powerful.

Term

800,000 K

"And that one particular vehicle with the 800 K on that. I don't think that vehicle ever shut off."

When someone says '800,000 K', they mean the car has driven 800,000 kilometers. That's a lot of distance for a vehicle, showing it has been used a lot.

Term

running like a Swiss watch

"It ran like a Swiss rock watch, a Swiss."

When they say 'running like a Swiss watch', they mean the vehicle works very well and reliably, just like high-quality Swiss watches are known to do.

Term

temp gauge

"That temp gauge is a heat warning system. If it's creeping past halfway and climbing up, it's time to pull that puppy over and not see how far."

The temp gauge shows how hot the engine is running. If it gets too high, it means the engine might be overheating, and you should stop the car to let it cool down.

Term

coolant

"Pull it over, let it cool and check your coolant. Don't try to muscle through."

Coolant is a special liquid that helps keep the engine from getting too hot. If your engine is overheating, checking the coolant level is important to see if you need more.

Term

overheating

"Engines overheat fast, even in the winter months. Repairs take a lot longer and cost a lot more money, a lot."

Overheating happens when the engine gets too hot, which can cause serious problems. This can be due to not enough coolant or other issues with the cooling system.

Term

catastrophic damage

"Catastrophic damage means internal engine damage. If it's an automatic transmission, if the engine's running hot, your transmission's running hot and it's cooking donuts in there, buddy."

Catastrophic damage means that the engine has been seriously harmed, usually from overheating. Fixing this kind of damage can be very expensive and time-consuming.

Term

automatic transmission

"If it's an automatic transmission, if the engine's running hot, your transmission's running hot and it's cooking donuts in there, buddy."

An automatic transmission is a system in a car that changes gears automatically, so you don't have to shift them yourself. This makes driving easier, especially in heavy traffic.

Term

transmission fluid

"Here's what you have to remember is the lifeblood of that transmission is transmission fluid that has to be cooled by your engine's cooling system. Or it goes into Chernobyl meltdown."

Transmission fluid is like oil for your car's automatic transmission. It keeps the parts inside the transmission cool and helps them work together smoothly.

Term

cooling system

"...that has to be cooled by your engine's cooling system. Or it goes into Chernobyl meltdown."

The cooling system helps keep your car's engine from getting too hot. It uses a special liquid to absorb heat and keep everything running at the right temperature.

Term

electrolysis

"So electrolysis is the number one factor. These are in order, but I will tell you this. They're all serious. They all, if ignored, will cause catastrophic damage to your engine and your automatic transmission."

Electrolysis happens when electricity flows through the coolant in your car, causing parts to corrode. If not fixed, it can seriously damage your engine and other components.

Term

pH level

"Electrolysis is caused by inadequate pH level in the cooling system or bad electrical accessory grounds. And this past summer, I can't tell you the number of vehicles I had in that we"

The pH level measures how acidic or basic a liquid is. In your car's coolant, the right pH level helps prevent rust and damage to the engine. If it's off, it can cause problems.

Term

misfiring

"...Vehicles that weren't running right, misfiring, similar misfires."

Misfiring means that the engine isn't working smoothly because one or more parts aren't firing correctly. This can make the car run poorly or even stop working.

Car

Dodge Grand

"...One particular van whose name is Vanna White, a 2010 Dodge Grand Caravan, wouldn't even run."

The Dodge Grand Caravan is a family minivan that has a lot of space for passengers and cargo. The 2010 version is one of the models made during a time when it was popular for families.

Term

faulty computer

"...and also a faulty computer as well."

A faulty computer in a car means that the part that controls the engine isn't working right. This can cause the car to run badly or not start at all.

Term

PCM

"...all these electronics, ECMs, PCMs, BCMs, body control modules that run all the accessories and all the flue for doorfors that you have to have."

The PCM is another important computer in your car that controls both the engine and the transmission. It helps make sure everything works together smoothly for better performance.

Term

BCM

"...all these electronics, ECMs, PCMs, BCMs, body control modules that run all the accessories and all the flue for doorfors that you have to have."

The BCM is a computer in your car that controls things like the lights, windows, and locks. It helps make sure all these features work properly and efficiently.

Term

ECM

"...all these electronics, ECMs, PCMs, BCMs, body control modules that run all the accessories and all the flue for doorfors that you have to have."

The ECM is like the car's brain for the engine. It helps control how the engine runs by making adjustments based on information from different sensors. This helps the car run better and cleaner.

Part

cold beverage canister

"...And cold beverage canister. And in fact, I'm fixing that to be part of the 97 Jeep TJ Wrangler Rescue..."

A cold beverage canister is a container in a car that keeps drinks cold. It's usually found in the center console between the front seats.

Car

Jeep Wrangler

"...I'm fixing that to be part of the 97 Jeep TJ Wrangler Rescue, as I have a console to go in to the vehicle when we're done."

The Jeep TJ Wrangler is a type of Jeep that is built for off-roading. It's known for being tough and can handle rough terrains well.

Term

distilled water

"It has to be filtrate water or UV filtered water or distilled water..."

Distilled water is very clean water that doesn't have any minerals or impurities in it. It's often used in cars to make sure the coolant works properly without causing problems.

Term

antifreeze

"You cannot mix antifreeze, 50-50, 50% antifreeze, 50% water from the tap..."

Antifreeze is a liquid that helps keep your car's engine from freezing in winter and from boiling over in summer. It makes sure the engine stays at the right temperature.

Term

radiator

"...the 07 FJ Cruiser is due for pull the radiator, put a new one in. And your armchair warriors say, well, why would you do that?..."

The radiator is a part of the car that helps keep the engine cool. It takes hot liquid from the engine and cools it down before sending it back, so the engine doesn't get too hot and break.

Car

Toyota FJ Cruiser

"...this year coming, the 07 FJ Cruiser is due for pull the radiator, put a new one in. And your armchair warriors say, well, why would you do that? Is something wrong with it?..."

The Toyota FJ Cruiser is a tough SUV that looks a bit like older off-road vehicles. The 2007 version is known for being good at driving off-road and has a unique, boxy shape.

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