i usually buy the kit as wayne stated, as most probably do. i used the rubber ones for the first time just recently. actually, they came on a 3.0 i bought along with the turbo valve covers so i pulled mine off and put these on my 2.7. at first i torqued them and then went back and tighened them some more, just to the point i could see it was compressing the gasket.
my old set was actually leaking at the stud. that was with the gasket that had a green bead on it i think, and of course new washers and torqued.
as for pro's reusing them, thats not their money so it is easy to say use new ones, plus they likely have them in stock and dont have to order every time they take off valve covers.
still. at 6-7lbs does the washer do anything over a standard steel washer?
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86 930 94kmiles [_ _] RUNNING: [__] NOT RUNNING: ____77 911S widebody: SOLD
88 BMW 325is 200K+ SOLD
03 BMW 330CI 220K:: [_ _] RUNNING: [__] NOT RUNNING:
01 suburban 330K:: [_ _] RUNNING: [__] NOT RUNNING:
RACE CAR:: sold
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