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Sealing oil sender connection

656 Views 5 Replies 4 Participants Last post by  WILL
Looking under the hood the other day I noticed that where the connection for the oil pressure line attaches to the block is leaking. this is just a brass fitting that screws into the hole where the oil pressure sending unit used to screw in. I switched some years back to a manual gauge. What type of sealant do you put around the threads to stop the leak? I'm assuming that standard plumbers tape would be eaten away by the oil.
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First, he has removed the electric sender and is using a tube to a mechanical gauge.

Second, the tube should use a compression fitting. The threads don't seal it. If it is leaking, it is not because of the threads. (unless it is leaking between the adapter and block, then it is the threads)
There should only be the one size for tubing for a SAE thread for a mechanical gauge. NAPA should have what you need in stock too if it turns out that's where the problem is.
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