Rick's Free Auto Repair Advice

Posts Tagged: antifreeze


What’s the difference between antifreeze and engine coolant? There’s no difference between the terms antifreeze and engine coolant. The main ingredient is ethylene glycol (95) and that never wears out, so car owners have come to think of it a lifetime fluid that never needs changing. They couldn’t be more wrong. What they don’t understand is that the remaining portion of the mix contains additives like anti-corrosive agents and water pump lubricants and those DO break down and wear out. Engine coolant does more than protect against freezing, it literally … Read More

Engine coolant – Warning for Chrysler vehicles

Using the wrong engine coolant – Chrysler Using the wrong engine coolant in your new Chrysler product can cause big problems. A Chrysler technical service bulletin (07-004-12) contains a coolant warning. The warning pertains to all 2013 and new Chrysler vehicles except those equipped with the 2.2-liter and 2.0-liter diesel engines. The new coolant is purple Organic Additive Technology (OAT) and is specifically NOT compatible with other coolant technologies. The purple Chrysler coolant is good for 10-years or 150,000 miles. Topping off or adding any engine coolant other than the … Read More

GM 3.1-liter and 3.4-liter dexcool gasket leak problems

GM 3.1-liter and 3.4-liter engines are known for intake manifold gasket leaks. Most people call it the dexcool gasket leak. But it’s not caused by dexcool. It’s a faulty gasket design that’ll happen regardless of which coolant is in the engine. The GM 3.1-liter and 3.4-liter V-6 engines are known for some problems. Top on the list are leaky intake manifold gaskets that can literally destroy the engine if not fixed promptly. Here’s some background on the engine and what issues to look for. The 3.1-liter V-6 engine was made … Read More

Is DexCool bad

DexCool problems Mechanics say they hate DexCool and blame it for all kinds of problems. Most aren’t the fault of DexCool. Here’s the REAL scoop on Dex-Cool and coolants in general. First some history Most of the older green coolants were silicate based. Their primary job was to prevent freezing. But they also had additives to prevent corrosion. In the case of the green coolants, the silicates deposit on metal surfaces to “PASSIVATE” them. In other words, the silicate coats the metal parts to prevent electrolysis. The problem with silicate … Read More

Switch to green coolant?

Should you switch to green coolant? Is it ok to switch to green coolant instead of factory coolant? Since not all auto parts stores stock all factory coolants, many people ask if they can switch to green coolant. You can, but that decision will cost you over the long term. The damage won’t show up right away. In fact, a year or two down the road when your water pump starts leaking or your heater core springs a leak, you probably won’ think it was caused by using the wrong … Read More

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