I had some SL rated SuperFlo 5W-20 that was buried in my stash. It was from 2002 I believe. Threw it in my sons 02 Focus Zetec and 1500 miles later all seems well. Still smooth, quiet and same MPG. Now UOA maybe brutal..LOL .but I don't believe so. Mobil says 5 years old is max.. Hopefully they are conservative LOL
I shook the heck out of it...didn't see any residue at botom of bottle. Also poured a qt into clear jar. Looked good....FWIW LOL
I shook the heck out of it...didn't see any residue at botom of bottle. Also poured a qt into clear jar. Looked good....FWIW LOL