youtube.com › watchEngine Oil Codes Explained, SAE (Society of Automotive Engineers) numbers (by Craig Kirkman)
Get a GREAT UNDERSTANDING of Multigrade Oil Codes, with this Unique Effortless Explanation. The designations 0W, 20, 30, 5W30, 5W40, 10W30, 10W40, 15W40, and SEA30 stand for various motor oil grades and kinds used in internal combustion engines. Choosing the proper oil for your engine is crucial for both the longevity and proper running of your ...