My Corvette C6 Z06 LS7 427 requires DexCool coolant and Mobil 1 5w-30. I can’t find DexCool in Europe, any alternatives? Thank you!
Halifords offers Comma along with their private label OAT coolant. Some basic coolant info for your reading. Automotive antifreeze has traditionally been made with ethylene glycol and Inorganic Acid Technology (IAT) corrosion inhibitors since 1926. American vehicles have traditionally been designed to use antifreeze with silicates and phosphates as corrosion inhibitors. European vehicles have traditionally used antifreeze that does not use phosphates. Japanese vehicles have traditionally used antifreeze that does not use silicates. Newer corrosion inhibitor technology includes Organic Acid Technology (OAT) and Hybrid Organic Acid Technology (HOAT). Both may be referred to as “extended life” antifreeze and were introduced in the 1990′s. IAT antifreeze has a 2 year or 30,000 mile service life, where OAT and HOAT have a 5 year or 150,000 mile service life. OAT based antifreeze is not compatible with IAT antifreeze; although, some HOAT formulas claim compatibility with certain OAT formulas or IAT formulas. OAT and HOAT antifreeze is designed for use in aluminum radiators and components. Antifreeze is dyed to whatever color the manufacturer chooses and may help to distinguish the type of antifreeze (IAT, OAT or HOAT) or may be used to market variations of antifreeze formulas within a brand.
Any mechanic who knows American cars should be able to match DexCool specifications to European coolant. It's just the simple OAT (Organic Acid Technology), and European HOAT (Hybrid OAT) should be fine.
Flush the cooling system and use all purpose coolant.
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