On Sun, 16 Mar 2008, Davis Martin wrote: > Ya the lighter the oil, the less resistance in the engine. > This makes for slight gains in HP. Somthing the big boys do > to try and gain a slight advantage over the next guy. So what's the story with thin (say 0W-15 mobil1 synth) in older-design motors with relatively large clearances? I mean nicely made, not old, worn out. WIll that leave not enough bearing clearance? Will piston skirts suffer? _______________________________________________ Amc-list mailing list Amc-list@xxxxxxxxxxxx http://splatter.wps.com/cgi-bin/mailman/listinfo/amc-list