http://blog.sfrcorp.com/2006/08/16/sfrs-products-are-compatible-with-gf-4-and-cj-4-motor-oils/ Oil additive and lubrication education and news Fri, 25 Jul 2008 00:17:39 +0000 http://wordpress.org/?v=2.6 http://blog.sfrcorp.com/2006/08/16/sfrs-products-are-compatible-with-gf-4-and-cj-4-motor-oils/#comment-10385 ZDDP in Additives Mon, 15 Oct 2007 17:40:22 +0000 http://www.sfrcorpblog.dreamhosters.com/2006/08/16/sfrs-products-are-compatible-with-gf-4-and-cj-4-motor-oils/#comment-10385 [...] 2006 when a new motor oil warranty category for gasoline engines was developed GF-4, problems started occurring with older cars. When a new warranty specification is put on the market [...] [...] 2006 when a new motor oil warranty category for gasoline engines was developed GF-4, problems started occurring with older cars. When a new warranty specification is put on the market [...]

]]>