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Try not, Do or Do not
Join Date: Apr 2004
Location: Fallbrook, Ca. 92028
Posts: 14,242
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On later engines 78 on, that fitting comes sealed with green Loctite. The thread locker acts as a sealant. You would think that the aluminum seal would be enough but the factory felt green Loctite was needed.
Be cautious about over tightening the fitting. I have seen more than one boss cracked and even broken off from over tightening.
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