Originally Posted By: Ken2
Amsoil ATL is not made to be better than the newest version of Amsoil ATF, it is different. It is lower viscosity (among other things) for the transmissions that specify the lower viscosity fluid such as Dexron-VI, Toyota WS, etc.
In a FWD car the ATF is also lubing the differential. ATF coolers in the radiator are in the outlet end of the radiator which is much cooler than the inlet.
The Toyota WS is a very long life fluid. I wouldn't worry about changing it unless the fluid had been damaged for some reason. You might treat your daughter to a $22.50 lab test of the fluid (Blackstone's price) to find out exactly what's what. If the Scion is leased, fuggedaboudit.
Well, Amsoil's ATF has proven itself and i expect the ATL to do the same. The ATF was fully compatible with T-IV fluid as well as many others, and it proved to be stellar in comparison.
Most front wheel drive cars might lube the differential at the same time, but i know most of the camry's & corolla's do not. They have a seperate differential inside the trans that must be serviced regularly in addition to the trans. The Scion TC has the same powertrain as the camry 4 cyl, so i would assume it's the same way. Dunno for sure though.
From a few WS used analysis, it is not holding up like I think it should. OP claims it starts shearing badly at 30k miles, and to me this is NOT a longlife fluid. And from what i've read, it's not synthetic either; only a blend.
All my rigs get plenty of attention in the maintenance area, and i would like to see my kids be the same way with theirs.
No; it's not a lease.