totally agree. i CAN'T believe we're doing this again. (of course, i've said that the last 50 times i've clicked on these threads)

as for doing your own research - there's a search function on the site... and you'd probably find and answer ever question you ever came up with - just with the threads in the last 6 mo. pertaining to oil...

 

Because 20w50 is thicker, provides better protection and believe it or not, the thicker synthetic oil flows pretty much just as well on cold startups as the thinner oil does.