Posted by David on Monday, October 22, 2007 at 15:14:37 :
In Reply to: Re: How many miles is a flathead good for? posted by Keith in Washington on Monday, October 22, 2007 at 10:26:40 :
The oil will absorb moisture and oxidize, changing the Ph to acidic, which will attack the bearing material. Additive packages do combat this break down but what it says on the can, bottle, or manual is correct.