2020 STI.

[electricmarquis]

I also found a 5qt Castrol 5w-30 Edge sitting on my shelf I forgot I bought for the Outback we sold. Perhaps Ill run that one first being its going to be a 3k mile OCI next.

 

[Mr Nice]

Originally Posted by MrWideTires
You made an excellent choice on oil. STIs love 0w40 and 5w40.

I've owned STI for 14 years now and they've been flawlessly reliable, and my current one has 500hp.. still doesn't even burn oil.

You just have to make sure to keep the rpm up, these cars absolutely HATE low rpm.

How does the transmission hold up to 500 horsepower ?

I'm always impressed with these AWD turbo cars.