Review on Hy-Per Lube By Rislone ZDDP Supplement (4405-6PK) by Jay Koterba

Can't think of anything more confusing these days than getting the right motor oil for older engines. Every oil company makes various claims for their products and all are supposedly backward compatible - even when they certainly are not. This Rislone additive seems to be a good insurance policy for about any application without spending a fortune on special oils that may or may not be correct for a particular engine. They claim it does contain the additives that have been deleted/reduced from most oils, not a substitute that some companies won't specify. And can't beat ebay's price and shipping on this, as usual seems like.