Just saw this; Castrol Edge 5w-50 is formulated for classic cars and has higher levels of zddp than the GF-5 energy conserving grades.
http://www.castrol.com/castrol/genericarticle.do?categoryId=82915470&contentId=7032644
That's another option for anyone with an older vehicle needing a higher zinc oil.
http://www.castrol.com/castrol/genericarticle.do?categoryId=82915470&contentId=7032644
That's another option for anyone with an older vehicle needing a higher zinc oil.
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