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Hi and thanks for at least two responses so far.
Regarding washer cost I see McMaster-Carr sells a pack of 20 for about 17 bucks so not exactly bank breaking. McMaster-Carr call them Wedge Lock Washers.
HOWEVER - my main question still to be answered is - do these Valve Cover studs need to be sealed?
As I have said, I have seen other threads claiming the Nyloc nuts and crush washers on valve covers are to seal the studs from oil leaks. That just does not make any sense to me but I will listen to any feedback given either for or against the sealing theory.
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