[QUOTE=techinspector1always keep a bottle of GM Engine Oil Supplement in the oil. It is formulated with molybdenum disulphide, a very good extreme pressure lubricant which will help protect the cam lobes/lifter faces.[/QUOTE]

Is this a GM part only? Maybe there is a parts store substitute that could be used? I am interested in more specifics so I know exactly what to buy (either from the dealer or at parts store).

Thanks techinspector1