I noticed that M1 and PP no longer show A5/B5 ratings on the new SP / GF-6 synthetic oils and now are only showing A1/B1 ratings : Can I expect these new oils to sheer more than previous generation of A5/B5 rated oils ? ... My Hyundai GDI 2.4L '17 Sonata sheers oil over 4K miles like it invented the term , so sheer stable 5W30 synthetic oils are a requirement for me .
*I previously thought Valvoline Advance 5W30 synthetic was a very good synthetic 5W30 for my Hyundai 2.4L GDI engine but a recent UOA of an easy driven similar Hyundai 2.4L GDI showed it sheered down to a 20W oil only after 3,500 miles (no A5/B5 rating) which is a concern . All other specs. of the Valvoline oil were great though (which is too bad) .
*I previously thought Valvoline Advance 5W30 synthetic was a very good synthetic 5W30 for my Hyundai 2.4L GDI engine but a recent UOA of an easy driven similar Hyundai 2.4L GDI showed it sheered down to a 20W oil only after 3,500 miles (no A5/B5 rating) which is a concern . All other specs. of the Valvoline oil were great though (which is too bad) .