It is available for the 1GR. I am not sure how they decide what vehicle to install it on, but many 1GR engines have the very same oil cooler as on the SEMA XRunner.
It might be in the Tundra and 4Runner and maybe the double cab. Maybe folks here can check theirs and see what combinations it comes on and what it does not. We all know the XRunner does not have it.
The ideal oil temp for long oil life is 200* F. On my 4Runners with this type of oil cooler, it hovers right around 190 and may get to 210 on the highway. It will go higher if you drive faster for longer periods of time, but overall it does very good.
From what I have seen on the XRunner, it will be 220-230 at highway speed. If you really push it the temp can pass 250 without any effort.
When you sit at idle, the oil temp drops to around 150 or so and the heats back up quick when you get underway. I don't like seeing that broad change in oil temp. The 5vz has a very stable oil temp under all conditions.
I really would like to see a cooler on the 1GR engine and I am very suprised that Toyota did not put one on all the engines.
Gadget
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