Originally Posted by kschachn
Originally Posted by simple_gifts
A user on here had a GM transmission fail after switching to Valvoline Maxlife. I admit the timing was a bit unfortunate and he even sent a sample to Valvoline; he continued to badmouth the product even tho 100s of people have used it with no issues.
The apparent unvocalised premise of his position was "a properly maintained transmission will never fail" which is a bit tenuous.
There were a lot of other things about his position that were more than a bit tenuous, his claim of failure wasn't the only thing. He had zero proof it was the fluid that caused the failure (assuming it even happened in the first place).
Probably this long thread and the individual in it that got banned:
https://www.bobistheoilguy.com/foru...-caution-regarding-valvoline-maxlife-atf
Oh man was that thread a lot of fun.
I have used a castrol imv in a hyundai sp3, mercon and mercon v applications with success. I have used atf +4 (not multi vehicle but still) in an sp3 application with success and i have used maxlife in mercon, mercon v and toyota ws with success. Initially i thought maxlife wasnt good in my a4ld but later learned it was a small leak causing fluid level to drop.
All in all i use it depending on the factory fluid. For fluids like atf+4 and dw-1 id recommend sticking oem. But with things like dexron 6 and mercon lv where most fluids are designed around them multi vehicles are totally fine by me. I get that what i have stated for experience with somewhat goes against my advice but hey, I wanted to experiment. For the sp-IV, it is a high quality factory fluid and worth sticking to for peace of mind imo.
https://www.bobistheoilguy.com/forums/ubbthreads.php/topics/2879800/1
This was the thread i had in mind when i was referring to one as fun and the closest thing i know of to what you're looking for.