super old thread OP - start new ones.
Rock-Rat - why use distilled water if going with pre-mix?
Also could the higher red (what i use) failure rate be such because folks don't mix it at the correct dilution with distilled water?
just wondering what i'm missing.... :cowboy:
Only distilled if he chooses another route or Toyota Red instead of the 50/50 pre-mix. I'll clarify in the post. Thanks for pointing that out.
Chris Jeddy, one of the senior techs at Broadway Toyota along with another tech and I had a pretty good discussion on the whole tranny flush v. drain and fill and why they don't do flushes at the dealer anymore for our rigs. We also talked about the 50/50 pre-mix v. the red.
Chris was saying they see more failures, not necessarily T4R's, but with vehicles in general (a lot of Prius's that have been using the red v. the 50/50. Most are originally factory serviced. I think, also you can attribute some of the failures, as you mentioned, to improper servicing.
The ingredients are different and the 50/50 pre-mix is the
Super Long Life and the
Toyota Red is the Long Life. I've been using the pre-mix for 16 years and so far (knock on wood) everything is OK. I have to check, but I believe our manuals recommend the Super Long Life. I'll run out to my rig and report back. UPDATE: Page 260 of the manual: Use "TOYOTA Long Life Coolant or equivalent." So red properly mixed should be good.
Gallon jug of the Toyota Red Long Life ingredients
Ethylene Glycol(107-21-1), Diethylene Glycol(111-46-6) Water(7732-18-5) Orangic Acid Salt(532-32-1) Hydrated Inorganic Salt(1310-58-3).
Gallon jug of the Toyota Super Long Life Antifreeze/coolant ( Pink )
Water (7732-18-5), Ethylene Glycol (107-21-1), Diethylene Glycol (111-46-6), Sebacic Acid (111-20-6), Potassium Hydroxide (1310-58-3)
I think this is one of those questions that will remain a mystery the same as the jiggle valve placement. You and I know that proper regular servicing with whatever brand folks choose is still the best preventive mtx.