So I know the first question you guys are going to ask and that's why race an auto trans? The answer is because I originally bought it as a daily driver and my right shoulder is arthritic, so the paddle shifters come in handy.
Now on to the problem: I just hit 36k miles and about 15 track days, and my transmission started shifting funny, making the car rev to red line (and the spark/fuel cut). After talking to a few mechanics and doing some research, the cooling on this trans is inadequate and it generates a TON of heat. So my next mod is going to be a trans cooler, but in the meantime I need to get this fluid changed out stat.
I think this car provides ATF temp via OBD but my current scanner doesn't read it, so an upgrade in that regard is also in the pipeline.
Having said that, I've done a little research:
I'm inclined to go with a little higher viscosity for the racing application and so it is more viscous at higher temperatures.
What does the crowd of tribologists on BITOG say?
Now on to the problem: I just hit 36k miles and about 15 track days, and my transmission started shifting funny, making the car rev to red line (and the spark/fuel cut). After talking to a few mechanics and doing some research, the cooling on this trans is inadequate and it generates a TON of heat. So my next mod is going to be a trans cooler, but in the meantime I need to get this fluid changed out stat.
I think this car provides ATF temp via OBD but my current scanner doesn't read it, so an upgrade in that regard is also in the pipeline.
Having said that, I've done a little research:
Brand | Type | Price/qt | Price/16qt | Vis 40 | Vis 100 | VI |
Redline | D6 | $13 | $104 | 31 | 6.3 | 163 |
Toyota | WS | $8.45 | $67.60 | 23 | 5.5 | ?? |
AISIN | WS | $6.50 | $52.00 | 34.88 | 7.332 | |
AMSOIL | Signature ATF | 0 | 38.5 | 7.5 | ||
AMSOIL | Signature ATL (low viscosity) | 0 | 30.8 | 6.3 | ||
Valvoline | Maxlife Multi-Vehicle | $7 | $56 | 28 | 5.9 | 163 |
Motul | ATF VI | $9 | $72 | 30.5 | 6.1 | |
Castrol | Transmax Full Synthetic Multi-vehicle | $11 | $88 | 30.2 | 5.9 | 161 |
Mobil | Multi-Vehicle ATF | $9 | $72 | 34.1 | 7.42 | 192 |
Pentosin | ATF 44 | $10.20 | $81.60 | 37.3 | 7.3 | 165 |
I'm inclined to go with a little higher viscosity for the racing application and so it is more viscous at higher temperatures.
What does the crowd of tribologists on BITOG say?
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