On the Ford Truck Enthusiasts Forum, in the Lube section, it states that Havoline did not fare too well in the 4 ball test. What does that mean? I use Havoline on a regular basis (have for years) and it seems to be pretty highly regarded here. What's this 4-ball thing all about and any truth to it?
[ March 27, 2006, 12:50 AM: Message edited by: 59 Vetteman ]
[ March 27, 2006, 12:50 AM: Message edited by: 59 Vetteman ]