Originally Posted By: crinkles
so what's so bad about T-IV?? it is always badmouthed but I don't know why... I think because it is OEM people think it's automatically a compromised product. Which is crazy and self defeating to Toyota if it were.
It may not have the "lifetime" idea but, change it out, and its perfectly fine... ?
It's because a lot of folks have replaced this fluid with a hi quality synthetic with excellent results. Better shifting, longer life, and longer intervals. I'm sure the T-IV fluid isn't 'bad' persay, it's just that it's not with standing the test of time. Or holding up well, and for the price you pay for that stuff, you'd think it would be better.
I just think there's better alternative fluids out there.