Oil leak from drain plug
Road Warrior
Joined: May 2025
Posts: 1,284
Likes: 658
From: Eastpointe, MI
And after getting a new one with the proper rubber O ring and it was still leaking, damaged I would consider it.
Seasoned HDF Member
Joined: Apr 2010
Posts: 9,568
Likes: 7,936
From: Long Island, New York
A little thread sealant is not going to hurt anything and might stop a small leak. Teflon tape does not seem to work as well and some petroleum products can degrade it. Thread sealant is made for the application and will hold up, but if you have a crack..........
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Tourer
Joined: Nov 2014
Posts: 364
Likes: 221
From: Ga
If threads are cracked is it repairable?
Seasoned HDF Member
Joined: Aug 2006
Posts: 24,526
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From: Pennsylvania
Buddy of mine called me and told me that his bike just started leaking oil He’s had the bike a year now with no problems till now. So he brings it to my shop and we see it leaking from drain plug . I told him it was probably from o ring not sealing good and that we need to go ahead and change oil and replace o ring. (Engine). I got plug removed and found o ring in very bad condition and could see someone had also had applied thread compound on plug .Cleaned plug and replaced o ring and replaced oil. Should have fixed this issue but we still have a very small leak I’m thinking of replacing plug but I’m not sure it’s the problem . Is it ok to put teflon tape on plug?Also want to mention plug was extremely tight. Anyone got any suggestions. Thanks. Oh this is 2016 Heritage with 13k miles.
You state it is a 2016 Heritage, you can just replace the oil drain hose and drain plug without removing the oil tank assembly. $10 for the hose & $4 for the plug and $5 for the clamps.
If it is a Heritage, it does not have the oil pan underneath.
Last edited by CoolBreeze3646; Sep 12, 2025 at 07:43 AM.
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Tourer
Joined: Nov 2014
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From: Ga
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Seasoned HDF Member
Joined: Dec 2017
Posts: 5,077
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From: Plover, WI
Buddy of mine called me and told me that his bike just started leaking oil Hes had the bike a year now with no problems till now. So he brings it to my shop and we see it leaking from drain plug . I told him it was probably from o ring not sealing good and that we need to go ahead and change oil and replace o ring. (Engine). I got plug removed and found o ring in very bad condition and could see someone had also had applied thread compound on plug .Cleaned plug and replaced o ring and replaced oil. Should have fixed this issue but we still have a very small leak Im thinking of replacing plug but Im not sure its the problem . Is it ok to put teflon tape on plug?Also want to mention plug was extremely tight. Anyone got any suggestions. Thanks. Oh this is 2016 Heritage with 13k miles.
