M Merkava_4 Joined Jan 30, 2007 Messages 17,501 Location Clovis, CA Nov 12, 2007 #21 Yes! Castrol is saying don't use an Energy Conserving 5W-30/10W-30 for that vintage Ford 289; they are telling you to use an oil with substance!
Yes! Castrol is saying don't use an Energy Conserving 5W-30/10W-30 for that vintage Ford 289; they are telling you to use an oil with substance!
