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Drain plug for Auto transmission
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Richard c
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Oct 30, 2011, 5:10 PM
Post #1 of 9
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Drain plug for Auto transmission
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Greetings, I changed filter in my Astro transmission a while back. I drilled and added a drain plug to the pan, the kind that swells as you tighten it. Well, there is a slight leak but a leak none the less. Do you know of a good add on drain plug that doesn't leak???
Thankyou Richard
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Hammer Time
Ultimate Carjunky
/ Moderator
Oct 30, 2011, 6:27 PM
Post #2 of 9
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Re: Drain plug for Auto transmission
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That was a foolish thing to do. I would by a new pan and replace it. The next time you want to change the fluid, simply have it done with an exchanger.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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Richard c
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Oct 30, 2011, 11:10 PM
Post #3 of 9
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Re: Drain plug for Auto transmission
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Seems like a foolish thing not to have a drain. I'll find a good plug and install that. I've installed one on every car we've owned, just never used this kind of drain plug before. It's the kind of thing a mechanic would do and a parts man wouldn't understand.
Has anyone used a B&M drain plug kit, like them, have any problems?
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Sidom
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/ Moderator
Oct 30, 2011, 11:42 PM
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Re: Drain plug for Auto transmission
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No reason to be insulting here.....If you don't like the advise.....simply ignore it.....
As HT point out, complete fluid exhanging is the best method because it's the only method that changes all the fluid.
Dropping the pan (or using a drain) only changes roughly 1/3 of the fluid leaving 2/3s of dirty fluid still in the system. If you aren't going to exchange then at the bare minimum the pan should be dropped so it can be cleaned & a new filter installed.
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Richard c
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Oct 31, 2011, 10:54 AM
Post #5 of 9
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Re: Drain plug for Auto transmission
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I agree! Good information on this site, given with the with the best intention.
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Richard c
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Oct 31, 2011, 6:07 PM
Post #6 of 9
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Re: Drain plug for Auto transmission
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I picked up a plug from NAPA today and instaled it[B&M had to be ordered couldn't wait].
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Discretesignals
Ultimate Carjunky
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Oct 31, 2011, 6:13 PM
Post #7 of 9
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Re: Drain plug for Auto transmission
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There are a few makes with drain plugs on the pan. It makes it a whole lot less of a mess when you go to drop the pan to change out the filter and to see what has accumulated in the bottom of the pan or on the magnet. You need threading for the plug to screw into. I wouldn't trust the rubber stopper.
We don't have a fluid exchanger at work, but you can also disconnect a cooler line and drain most of the pan also. The exchanger would be nice if our boss would get off his wallet...LOL.... Even with the exchange of fluid you still should drop the pan and change the filter. That is unless the filter isn't serviceable of course.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
(This post was edited by Discretesignals on Oct 31, 2011, 6:16 PM)
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Tom Greenleaf
Ultimate Carjunky
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Nov 1, 2011, 1:24 PM
Post #8 of 9
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Re: Drain plug for Auto transmission
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Done with this crap but used to put them on many but they were real oil drain plugs and would match it to the right nut and braze the nut to a totally cleaned out pan and painted (rust an issue even oil pans) low profile nut and real gasket - no rubber O ring cheap thing that scares me. Never had a problem. Steel pans only and all were,
Tom
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Richard c
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Nov 1, 2011, 11:08 PM
Post #9 of 9
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Re: Drain plug for Auto transmission
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I like brass washers too, rubber gets me nervous. I have a couple engines up on the hill, I may cut a 2" circle around the oil pan drain and weld one on.
I use to be good at TIG
but my wire feed here is flux core, the lowest setting is 60amps, I'll have to practice a bit, when I feel I can do a water/oil tight weld on this light metal I'll do it.
Dropping a cooler line is good too.
Thanks for posting it helps.
(This post was edited by Richard c on Nov 1, 2011, 11:26 PM)
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