RX300Steve

I know that a lot of people use and stand behind Amsoil for motor oil and gear oil, but does anyone have experience with the transmission fluid they have that is suppose to be T-IV replacement ? I've switched all oils that I can so far to Amsoil, and considering the ATF change now.
Let me hear any good/bad experiences with Amsoils ATF for Lexus RX300 transmission.

DaveGS4

iTrader: (2)

I can't comment on RX, but I use it in my supercharged GS with an upgraded tranny and it works great. No issues, have had it in approx 8 - 10 months I'd guess

RX300Steve

Does the GS also specify Toyota ATF type T-IV ? or does it call for something else.

engin_ear

iTrader: (1)

T-IV is specified for GS.
I'm also thinking of doing the Amsoil stuff instead of T-IV. Mobil also makes a syn replacement.

edgy

Amsoil in general makes killer products.. .i use their stuff in all my cars & i will be using their auto tranny fluid in the RX as soon as i need to flush & fill again...

Lexusfreak

I just did a 'drain & fill' with Amsoil synthetic ATF in my ES....no problems.

TunedRX300

RX300 AWD has 16 qts of ATF, you can only drain and fill 4 qts. Use Toyota Type IV if you are still under powertrain warranty so Lexus won't deny your claim if your tranny blows.

Lexusfreak

How many miles on your RX, Steve?