But 5w30 and 10w30 are both 30 weight when warm. The 5w will get to the bearings faster than 10w when cold and might help keep those clearances from getting bigger. : ) Ken Quoting Armand Eshleman <aje1@xxxxxxxxxxxxxxx>: > > Ken, > > See the message I just posted responding to Matt's sage advice. > However please comment on what old engines benefit best from, the 5W or > maybe thicker due to tired bearing clearances. > > Armand > > > > Ken said, > > ...and synthetics can be in 5W-50, 0W-40, and other wide ranges. Shell > makes a > > 0W-40 that is SJ grade. Usually 10W-30 is the same price as 5W-30 so why > not use > > the 5W. > > > > Ken > > > > _______________________________________________ > Amc-list mailing list > Amc-list@xxxxxxxxxxxx > http://splatter.wps.com/cgi-bin/mailman/listinfo/amc-list > _______________________________________________ Amc-list mailing list Amc-list@xxxxxxxxxxxx http://splatter.wps.com/cgi-bin/mailman/listinfo/amc-list