A aquariuscsm Thread starter Joined Dec 30, 2006 Messages 29,558 Oct 4, 2017 #61 Originally Posted By: camrydriver111 Why does this engine spec 20W50? Is it air cooled? It specs 10W30-20W50 according to the ambient temperatures. The "normal" spec (underhood sticker) is 10W30/10W40.
Originally Posted By: camrydriver111 Why does this engine spec 20W50? Is it air cooled? It specs 10W30-20W50 according to the ambient temperatures. The "normal" spec (underhood sticker) is 10W30/10W40.