Re: valve cover gaskets
as for Gaskets. The GM Black RTV was the best at holding. you have to scrub down the rails and get every bit of old gasket off with a wire brush and carb/brake cleaner. I used to take a drill bit and clean out the bolt holes so as to not crack the head when putting the new gaskets on.
CDR...yea thats it, I couldn't think of the name. I once had a 5.7 diesel that was leaking 6-7 quarts a day in a Caprice. me and my buddy did some figureing and created a SUPER CDR. we used a length of vacuum hose on the intake snorkle to find the peak vacuum at crusing speed. we then welded a peice of tube into the snorkle and on in the oil filler neck. we dropped oil cunsumption down to 1 quart a day by tuning it in.
if I remember right the GM RTV comes in a caulk gun tube for around $40. you might find it cheaper at the parts store.
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