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Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Transmission - Rearend> 1965 Muncie M-21 4-Speed: No Drain Plug
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Topic Review (Newest First)
04-10-2013 05:46 AM
lakeroadster For future thread surfers here's a link to similar thread:

Autogear: You still recommending using only (1) quart of GL-4, instead of filling it up to the drain plug with 3 pints?
04-09-2013 12:09 PM
AutoGear you'll find all kinds of uses for it really. no problem
04-09-2013 11:49 AM
Originally Posted by AutoGear View Post
they have suction guns you can get to 'insert' and remove fluid.
Excellent. Napa's got em for about $20...

Thanks for your help!
04-08-2013 09:46 AM
AutoGear they have suction guns you can get to 'insert' and remove fluid. Turkey baster would work, but you may have trouble getting sufficient fluid out. Original style Muncies (that have the revrse threaded nut) work best with 1 quart of a GL4 NON Synthetic 75w90 such as Sta-Lube #SL24229 from Napa. Race guys use Royal Purple MaxGear 75w90 or RedLine MTL(?). I usually only recommend the Sta-Lube or MAX GEAR (not RP's "synchromesh").

Here's what I use at home; got mine from Grainger for twice the price years ago

Google "16oz oil suction gun" Chi-com Freight has them for under 20 bucks. (Harbor Freight)
04-07-2013 05:57 PM
RWENUTS Turkey baster dude!! Stop laughing!! I'm serious!!
Buy a big baster for 5 bucks, put a vac hose on the end and go fishin'.
04-07-2013 04:54 PM
killeratrod also you can drill it tap it and install a drain yourself.
04-07-2013 04:50 PM
killeratrod they have an electric pump and you can suck it out the fill hole. they are about 25 or 30 bucks Autozone, walmart.
04-07-2013 03:52 PM
1965 Muncie M-21 4-Speed: No Drain Plug

What's the best way to drain the old lube out of a M-21 Muncie? No drain plug, anybody got a home made remedy, short of removing the shifter, removing the front 4 bolts and rotating the transmission 90 degrees?


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