Car: Subaru WRX STi
Total Miles: 2664
Mods: Stock
It got really cold last week and I REALLY didn't like how the Mobil DC 5W-30 behaved. Lots more chatter and engine noise (including roughness) as compared to my old Subaru wagon (where I ran Mobil 1 5W-30 synthetic). So, I drained and refilled...