This is the first UOA for my 2014 GMC Sierra 1500 with the new 5.3 Ecotec3 V8. OLM was at 19% and in service from January 2014 to April 2014. Mostly highway driven (around 85%). Engine is on its 2nd OCI when this sample was taken (first change at 6,900 miles and 9% OLM). I get complementary oil changes from the dealer for 2 years/24,000 miles. Oil used is GM #19259487 (Dexos 0w20) which should be the same as ACDelco 10-9116. Filter was ACDelco PF63.
Main reason I wanted to run a UOA was to check for fuel dilution. This is a DI engine with AFM. I haven't been able to find any UOA's for this new engine. Glad to see there was no fuel and flash point is still high. I would suspect wear metals will trend downwards as engine breaks in.
Main reason I wanted to run a UOA was to check for fuel dilution. This is a DI engine with AFM. I haven't been able to find any UOA's for this new engine. Glad to see there was no fuel and flash point is still high. I would suspect wear metals will trend downwards as engine breaks in.