quote:You probably don't want to overdo it. There's a delicate balance of seal swell and additive "affinity" for metal surfaces. I've heard one oil chemist assert that too much ester could prevent the proper bonding of detergent or antiwear additives on the surface, especially if fairly standard additive packages are used. Red Line seems to load up on certain additives. Maybe this prevents the additives from being "crowded" by the esters.
Originally posted by reyjay1: Buster i think you are right , PAO's can reduce pour point, certain esters as we have learned besides (or due to) being polar can be AW/EP adds themselves for increased film strength. This can be the 'secret' in certain high end blends it seems.