Originally Posted By: BadAndy
Syn blend.
0w-20 on fill cap.
Best to use full synthetic in 0W20 for extended use of +5...+6K. Protection, cleanliness, heat/cold guardiance all improve. Vast majority of times anyways ....lots of camera-proof on the internet (synthetic vs blends or conventional).
Wisdom says thin applications like 0w20 really counts more in-favor of using full synthetic. I've dealt with my fair share of thin oils. I would never even purchase a synblend 0w20. I keep my vehicles from birth until old age death.
If I were leasing, selling or trading-in every 100-150K, then I would consider a synblend, provided I OCI'd regularly. That word regularly does nt align with OLMs on some of these vehicles. Some are set ridiculously high. I reset my 2004 model OLM every 6-7K oil change. Otherwise it won't flash-on until 10-11K.
No thank you GM.