Hi everybody,
I'm doing a coolant flush & the old water pipe drain plug (Not the rad. drain plug--the cyl. drain plug) wasn't threaded in all the way by the previous owner or shop, so the exposed threads are rusted. I got it backed out & its not leaking as-is. Metal on metal threads
To NOT screw up the threads on the water pipe should I-
Reuse the bolt as-is since it doesn't leak, or get the rust off the exposed threads w/ penetrant first? (Any chance the water pipe threads have formed around the rust? - The reason I would reuse the bolt as is)
Also I need some kind of thread sealant so this won't happen again - is it cool to use Teflon tape? Any chance of the teflon disintegrating and getting into the cooling system over time? I'm trying to avoid buying a huge tube of silicone since I only need a little dab for this, but if its a better option than teflon I'll do it.
Thank you
I'm doing a coolant flush & the old water pipe drain plug (Not the rad. drain plug--the cyl. drain plug) wasn't threaded in all the way by the previous owner or shop, so the exposed threads are rusted. I got it backed out & its not leaking as-is. Metal on metal threads
To NOT screw up the threads on the water pipe should I-
Reuse the bolt as-is since it doesn't leak, or get the rust off the exposed threads w/ penetrant first? (Any chance the water pipe threads have formed around the rust? - The reason I would reuse the bolt as is)
Also I need some kind of thread sealant so this won't happen again - is it cool to use Teflon tape? Any chance of the teflon disintegrating and getting into the cooling system over time? I'm trying to avoid buying a huge tube of silicone since I only need a little dab for this, but if its a better option than teflon I'll do it.
Thank you
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