Running a quart over in a 2014 Buick 2.0T LTG. Owners manual states : for track events and competition driving : Add and keep the oil level at 1 quart above the "high Mark" when driving under these conditions : This implies even a little over 1 quart extra is ok. Car calls for 6 quarts, it seems running 7qts is no problem. Any downside? Main Reason : I'm toying with the idea of running Redline 5w-30 for 10k. Currently using Mobil 1 5w-30 for 5k. Thanks. BTW I've always just assumed that OCI was directly impacted by sump capacity. Is this true ?
Last edited: