1/11/2024 0 Comments Autozone coolant vs peak![]() It uses silicates to stop corrosion by passivating the metal surface. Ethylene Glycol - this is the traditional stuff, used since the 1950's. These additives include anti-foaming agents, surfactants (to improve the 'wetting' of the coolant and hence give better heat transfer) and anti-corrosion additives.ġ. In all cases the 'anti-freeze' properties last the life of the coolant - it is the various additives that deteriorate with time. ![]() There are currently five main types of antifreeze. Here's the best info I've found so far on the differences between the various coolants: However, this is not a major concern in North America, since our water is lower in mineral content, or softer, than European water.If you are interested in a phosphate-free antifreeze, Old World Industries offers PEAK™ Global LifeTime™ Antifreeze and SIERRA®, the Safer Antifreeze. If you mixed an antifreeze containing phosphates, which are part of the corrosion inhibitor package, with the water they have in Europe, the phosphates in the antifreeze may “drop out” and form deposits in your cooling system that can lead to corrosion. The reason is that the water in Europe has an extremely high mineral content. Some European car manufacturers recommend that phosphate free antifreeze be used in their vehicles. Why does my vehicle owner’s manual recommend a phosphate free antifreeze? ![]() Best way to be certain of compatible coolant is the spring for the BMW coolant and get the 100% certainty. That being said, if you're doing anything on your cooling system you've probably already spent several hundred $$ in parts and many hours in personal time doing the job. So long as you can be 100% certain the coolant you're using is compatible with your system you will be OK. ![]()
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