Summit Racing oil

Rat Bastid said
The “synthetic cause oil leaks” has been wrong since at least the late 1980’s. There may be some cheap(r) synthetics that attack oil seals but none of the quality oils (oils that you can’t buy off the shelf at the local parts stores and are actually synthetics) attack oil seals.

To find the value in synthetics you have to test them. And that is incredibly expensive to do.

i have used synthtics since te 80's never had any leaks caused by the oil all high mileage cars over 400,000 miles not one had any engine failures or burned oil between changes yeah i'm old and used to drive over 100,00 miles a year good oil pays off