Yes, the longevity of coolant has been increasing over the years. There are some exceptions (mainly power steering and transmission fluid), but otherwise most of time it's after market stuff (especially coolant).īut please ask Subaru or any manufacturer and their engineers the following question: "Please be specific of your definition of "Lifetime"?" Is 70,000, 100,000, 200,000, 1,000,000 miles? Is it when the warranty ends? What? They won't give you a specific number. They use the same stuff we get at the local supply. they don't always use the "manufacturer" fluids. So for your vehicle, use the "6 years/ 75,000 miles" interval, period.Īlso I have been back in the service bays of many dealers (being nice and a little "social engineering" gets me in), and here's something that will surprise many. Fluids are cheap, compared to total cost of the vehicle and changing them is preventative maintenance. The intervals that make the most sense are the "noted exceptions" (stop and go, towing, etc.). But it looses it's ability eventually (faster than you think).
You have to keep in mind that yes the engine/radiator is made of Aluminum, but it still oxidizes, especially with liquids touching it and the coolant is formulated to prevent the oxidation.
Granted the stuff is much better now and will last longer but 11 years/ 100,000+ miles, yea right. CVT - Lifetime, Coolant - 11 years bla, bla bla.Ĭhange the coolant at regular intervals. Ugh! I don't understand manufacturers recommendation for fluid changes.
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