Never had them leak until i never had them not leak. Must be the orange silicone sealer.
Bolt lengths are always awesomely set. Been doping the gasket on both sides with orange silicole, thin enough, but result in leakers. Added bonus is the leaker i took off might have a hairline crack. One i put on might be leaking because the header pipe has tell tale oil burn.
Back in the days that the oil filter Mounts didn't leak i used the non-hardening Indian Shellac. But that formula is dead crusty now with Permatex ownership. Afraid to buy & use IH-Shellac for anything anymore.
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