I recommend 10W-40 in the winter and 20W-50 in the summer, especially if you find that you are burning a little more oil than desired.
Mobil 1 makes a 10W-50 synthetic, good stuff, just $4 / qt.
Ride on
------------------
'89 420 SEL
'90 300 SEL
'84 300 SD (sold it)
|