Here is the best oil I've used: Bio-SynXtra Passenger Car Motor OilI work in automotive service at a GM dealer. My plan is to do an oil change at around 1000 miles, and another when I get to 5000 miles, then every 5000 afterwards. The question I've been wrestilng with is...what oil to use? Idemitsu? Pennz Ultra? Mobil-1 (my usual go-to)?
Try Pennzoil.
1000 miles is too soon to drain the factory oil. Try 3000 miles.