Hello: I used Super Tech conventional oil for many years in a 1988 Toyota pickup. When I sold the truck with 174,000 miles on it, it started and ran fine, and didn't use any oil between changes which were done every 5,000 miles along with a Super Tech oil filter. I still use Super Tech 5W-30 oil in my 1999 F150 and it starts and runs fine and doesn't burn oil between changes. I believe the correct term for Super Tech oil is low cost.