Originally Posted by Mush Mouse
It does suck having to pay higher amount of money for Toyota required stuff,but there hasnt been anyone from Toyota Corp. that will say that Brand X from Carquest meets our approval for use in our cars and trucks(they wont cause they jacked up the price on Genuine Toyota stuff). Ive scanned all Toyota Webs and BobIstheOilGuy.com sites and really no hard evidence for an alternative except for what people say theyve used. I had to suck it up for 2Gallons of Toyota SuperLongLife,was thinking about going just regular Toyota Red and Diluting it. I use Toyota brand T-IV Auto tranny fluid also over Amsoil and Mobil1 who say that thiers is compatable with T-IV prices there are compatable.
People get all worried about this and I really can't see there is that much to get all worried about
: first, Toyota's antifreeze is true long life so all that's really needed is a small supply for top-ups. Even Toyota's can't be too expensive to have around for that purpose; it's less than one fill-up fer chrissake!
Second: if I got bored with nothing to do and really wanted to change it I'd use any long-life that doesn't have silicates. The thing to avoid is silicates...especially in Japanese cooling systems. In European cars also avoid phosphates (and I think nitrates) but that's really a pollution thing they worry about. There are quite a few very good makers of quality silicate-free long life coolants, many who will I'm sure note Toyota compliance on their packaging. Just be sure to flush really well and get close to the right ratio for your expected low temp. and you can't go wrong.
By the way...50/50 isn't always best. People in northern Alaska or Canada might consider 60/40 for an extra margin of protection, and those in the desert southwest might like 25/75 since water is a whole lot better than glycol for moving heat out of the system.