Originally Posted by lj8915
I'm using Pennzoil ultra 5w-30 (non euro I believe). Anyone know if that oil is thick enough for hard driving on 100 degree days?
It's showing some decent uoa's in a WRX that's stock and sees a lot of highway mileage and it's probably the best GF5 oil out there. Whether or not it's thick enough for your application would be best answered with your own uoa. Use Rotella T6 for top ups and you're good to go.