2024 Subaru WRX TR

[ammolab]

The owners manual suggest 0w20, 50% thicker (m1 esp 0w30) should be sufficient even for track if his oil temps are controlled.
likely the brakes will be the limiting factor by far.. without upgrades.

But in this case the differences between 0w30 esp and 0w40 esp are fairly small.

the 0w40 hths is 3.8 vs 0w30 greater than 3.5
13.8cst@100c vs 12cst@100c

So in reference to these 2 oils I'd say throw a dart or whatever floats the OP's boat.

The WRX calls for 0W-20? Strange, as my wife’s 2024 Outback XT turbo requires 5W-30.