Quote:
Originally Posted by strat61caster
Isn't that area closer to the exhaust than the diff? If that's your only measurement I'd do a bit more investigation before deviating from OE spec fluid.
The silver rectangle behind the exhaust is the heat shield between the spare wheel well and the exhaust, it's pretty much dead center to the well, no way in hell is the diff the main heat contributor to the spare wheel well.
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Yes, you are probably right. And no I didn't investigate at all if the heat is coming from the exhaust or the diff. It's beside my question though and I shouldn't have mentioned it.
My questions are if the 75w140* oil will better prevent wear at track temperatures than 75w90? (Toyota Motorsports Group uses 75w140* in the CS-V3, albeit with a diff cooler).
And are there are any disadvantages to running 75w140* at street temperatures?
If it's true that it cause a loss of power and fuel economy cold
and is worse at dissipating heat at track temperatures, I will stick with 75w90. I would be curious if anyone has any experiences.
*Edit: Wrote 90w140 in error