" From: Davis Martin <martin-davis@xxxxxxxxxxxxx> " " Honestly I am not 100% but I don't believe detergent in oil is to pick up and suspend dirt It is to "scrub" the dirt from oil deposits. I would not and have been told long ago not to use heavy detergent oil in an engine that is already fairly clean. same arguments i've heard about synthetic oil. amsoil used to tell you to run their flush with your old oil before you dropped it, to get this stuff out before the synthetic hit it. " I believe the oil suspends the dirt and carries it to the filter to be cleaned. I think detergents started in the 90's? i think much earlier, '70s if not '60s. ________________________________________________________________________ Andrew Hay the genius nature internet rambler is to see what all have seen adh@xxxxxxxxxxxxxxxxx and think what none thought _______________________________________________ Amc-list mailing list Amc-list@xxxxxxxxxxxx http://splatter.wps.com/cgi-bin/mailman/listinfo/amc-list