Problems caused by use of non-approved "universal" coolant may not arise immediately, but may occur over longer periods of time due to additive compatibility issues. : Zerex G05 Phosphate Free 50/50 Prediluted Ready-to-Use Antifreeze/Coolant 1 GA : Automotive Automotive Oils & Fluids Antifreezes & Coolants Enjoy fast, FREE delivery, exclusive deals and award-winning movies & TV shows with Prime Try Prime and start saving today with Fast, FREE Delivery One-time purchase: 12. "Use of non-approved "universal" coolants may lead to eventual engine damage or failure. "Based on blind laboratory ASTM testing performed in duplicate, two leading "universal" coolants currently in the marketplace did not meet the extended D2809 requirements of Ford's Motorcraft Premium Gold Engine Coolant specification, WSS-M97B51-A1." Here's Ford's position on universal coolants: Until then, I will err on the cautious side based on the best info available (not anecdotal stories on BITOG, including mine).
I, too, would like scientific results showing the results of mixing coolants. A remaining inhibitor (borate) could attack aluminum if the silicates are depleted." An example cited by one coolant chemist: A somewhat diluted mix, perhaps 50% to 60% water, with the remainder (from top-ups) a 50-50 combination of an OAT and a conventional American coolant or a G-05. However, there are possible problems with extreme mixtures. "Sure, for small top-ups or in an emergency situation, it doesn't matter-use what you have.
Regarding your last statement, in this article, Paul Weissler gives one reason NOT TO MIX COOLANTS: Or, use a universal coolant that is approved for ALL applications. Replace same with same, if possible, using the same type of antifreeze that was in the system. "When adding or changing coolants, therefore, the best advice is to follow the recommendations of the vehicle manufacturer. Some argue this is not entirely true, but the stuff seem to work okay and is widely accepted in the aftermarket." "To reduce confusion, several antifreeze suppliers (Peak and Prestone) now sell a "universal" type of antifreeze that is compatible with all types of antifreeze and all makes and models of vehicles. " GM warns that intermixing extended life coolant with ordinary coolant reduces the coolant's life to that of the ordinary coolant." In this Larry Carley article, he reinforces these concepts: That article is aimed at service garages wanting to consolidate their inventory, not maximize cooling system life. He says it is ok to top off different coolants with UNIVERSAL coolant. I still have yet to hear a *reason* coolants can't mix.Īudi, that Larry Carley article does NOT recommend mixing different coolant chemistry. Made by Valvoline.The "mixing" of coolants is the most overblown issue on this website and on others too.Įverything you need to know about coolants is here on this page: Whether you’re topping off your radiator or doing a complete system flush, trust Zerex G05 Antifreeze/Coolant. So radiators, water pumps and other metal cooling system parts stay clean and your antifreeze flows and functions properly. It contains nitrites that protects diesel-engine cylinder liners from cavitation, while deposit control additives guard against hardwater deposits and scale. Zerex G05 Phosphate Free 50/50 Prediluted Ready-to-Use Antifreeze/Coolant 1 GA, B0033QQ4VW, 028882501279, 002888250127, ZXG05R at camelcamelcamel: Amazon. Our low-silicate, reduced pH, phosphate-free formula with Hybrid Organic Acid Technology (HOAT) protects all cooling system metals (including aluminum) from corrosion. Zerex is made for your car and protects better than industry standards against corrosion, leaking, deposits as well as freezing and boiling – the four main causes of cooling system failure, which is the leading cause of engine breakdown. Suitable for both gasoline and diesel engines, its original long-life chemistry is specially formulated with the highest quality virgin ethylene glycol and Hybrid Organic Acid Technology (HOAT).
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