WM now has jugs of MC 5w-20. Sweet.
IIRC most 5W20 is still installed by dealers, jiffy lubes, or independent shops. Most of the newer 5W20 speced cars still "new" enough where people have them serviced by professionals. I guess few DIYers own cars that take 5W20.quote:
It took 15 years before some stores would stock 5-30. No wonder some won't stock 5-20. These thinner oils don't sell as well as the thicker oils...