Hopefully he won't have to. Did you read where his oil pressure line was loose and leaking? Maybe he won't have to go to a higher grade oil. I consider that a band aid anyway.
And, the bigger the split between the winter grade and the high grade the more shear you have. They have way more VI improvers and that’s not always a good thing.
All multi-grade oils start out as the winter grade. I’m not a fan of a big split like that.
