Modern oil for 65 Muncie
#1
Le Mans Master
Thread Starter
Modern oil for 65 Muncie
some of my synchros are starting to act up, thought I'd try some fresh tranny fluid before major stuff - what's the consensus on good modern oil product for my 65 (original) Muncie?
TIA
TIA
#2
Melting Slicks
I had my BW T-10 rebuilt about 4 years ago and Tony s Corvette Shop
in Md. recommended using a synthetic gear lube called "Hydro Shift".
Shifts like butter and no leaks.
in Md. recommended using a synthetic gear lube called "Hydro Shift".
Shifts like butter and no leaks.
#3
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The original spec was Mil-L-2105D. The modern equivalent is SAE 80W-90 GL-5 gear oil - same as what is recommended for virtually all hypoid gear axles.
Duke
Duke
#4
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Jack,
It sounds like you may be up for a rebuild. Mine is out of the car now along with the engine, all being rebuilt. I should have it back in about a month and let you know how it comes out.
Marty
It sounds like you may be up for a rebuild. Mine is out of the car now along with the engine, all being rebuilt. I should have it back in about a month and let you know how it comes out.
Marty
#5
POSSE ZR-1 Driver
Looks like the list for this winter is growing..... I may have to move in for a week or so.....
#6
Le Mans Master
Thread Starter
Marty - I was JUST going to email you and ask how the repaint was going, and ask if the "while-I'm-at-its" had set in - we still need to cath up, maybe take the boys tubing next weekend (not using my boat enough, and it's your job to help!). What else has been added to the list of things on your car? How is the repaint progressing?
Paul, yeah, I was gonna sneak that one in on you, I need it to get through the summer (without surgery), I was just aksing an old mechanic last night "hey how hard is it to fix a synchro?" (he said it was simpy! - yeah right) and since that is a tranny-dropping exercise, I thought hmmmm, pull the tranny, fix some synchros, change the clutch (oh and swap in solid lifters and LT1 cam) while Paul is over!
I agree that list of things we are going to tackle is getting pretty long . . . . may have to have you along for the cam thing, and have at the tranny / centerforce clutch project by my lonesome.
Paul, yeah, I was gonna sneak that one in on you, I need it to get through the summer (without surgery), I was just aksing an old mechanic last night "hey how hard is it to fix a synchro?" (he said it was simpy! - yeah right) and since that is a tranny-dropping exercise, I thought hmmmm, pull the tranny, fix some synchros, change the clutch (oh and swap in solid lifters and LT1 cam) while Paul is over!
I agree that list of things we are going to tackle is getting pretty long . . . . may have to have you along for the cam thing, and have at the tranny / centerforce clutch project by my lonesome.
#8
Safety Car
Originally Posted by ctjackster
some of my synchros are starting to act up, thought I'd try some fresh tranny fluid before major stuff - what's the consensus on good modern oil product for my 65 (original) Muncie?
TIA
TIA
#9
Le Mans Master
Thread Starter
really stupid question - how do I drain the fluid from the Muncie tranny? Just looked at the shop manual quickly thins morning before leaving for work, didn't find a quick answer for a dummy mechanic.
#10
Safety Car
Originally Posted by ctjackster
really stupid question - how do I drain the fluid from the Muncie tranny? Just looked at the shop manual quickly thins morning before leaving for work, didn't find a quick answer for a dummy mechanic.
#11
Le Mans Master
Thread Starter
Sounds like a perfect solution and one that I might explore, but let's assume for the moment that I didn't drill and tap a drain hole - how do folks drain it - is this like my diff, will I be "evacuating" the fluid?
#13
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Originally Posted by ctjackster
Sounds like a perfect solution and one that I might explore, but let's assume for the moment that I didn't drill and tap a drain hole - how do folks drain it - is this like my diff, will I be "evacuating" the fluid?
#14
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You would be better off adding the drain hole / plug.
That way you would be removing the chips and debris from years of wear & "work". Otherwise, those chips & debris just keep wearing the internals even more.
Might even think of adding a drain plug with a magnet on the end.
Plasticman
That way you would be removing the chips and debris from years of wear & "work". Otherwise, those chips & debris just keep wearing the internals even more.
Might even think of adding a drain plug with a magnet on the end.
Plasticman
#15
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Originally Posted by ctjackster
really stupid question - how do I drain the fluid from the Muncie tranny? Just looked at the shop manual quickly thins morning before leaving for work, didn't find a quick answer for a dummy mechanic.
Duke
#16
Le Mans Master
Thread Starter
ok, I certainly have my answer - there is no oem drain plug (I knew that) and no bolt that can be removed that drains the Muncie, I have to suck the oil out like I did with my rear rear diff - I am familiar with that process. As for the drill and tap a hole idea, I can see the wisdom if I was going to be draining the thing quite often, which I won't be. I also have the original engine and tranny in the car, and tend to avoid doing things that would irreversibly harm originality, so I am likely to just grin and bear it.
Thanks for all the quick advice, all of which is appreciated.
Thanks for all the quick advice, all of which is appreciated.
#17
Le Mans Master
Thread Starter
ok, just to update this thread - drained the Muncie last night (all my best work gets done after 10:00 when the little kids are in bed) using my oil sucker that usually gets used for oil changes in my boat. I was kind of excited at first because the fluid was a bit low in the tranny to begin with. I say excited because I was hoping the old or inadequate oil level was the cause of some recent synchro noise. Replenished the fluid with the non-syn gear oil. Dropped the car back down off the ramps & stands, took it out for the test drive to check on the shifts in and out of third (the problem before) and . . . still acting up though not as bad. And the shifts themselves are all smoother now, when not encountering the buzz in and out of third, which is quite intermittent.
Looks like I am gonna limp it through the rest of the summer and then have to do something in the fall.
Looks like I am gonna limp it through the rest of the summer and then have to do something in the fall.
#18
Safety Car
Originally Posted by Plasticman
You would be better off adding the drain hole / plug.
That way you would be removing the chips and debris from years of wear & "work". Otherwise, those chips & debris just keep wearing the internals even more.
Might even think of adding a drain plug with a magnet on the end.
Plasticman
That way you would be removing the chips and debris from years of wear & "work". Otherwise, those chips & debris just keep wearing the internals even more.
Might even think of adding a drain plug with a magnet on the end.
Plasticman
#20
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A homemade drain hole does not guarantee that an chips in the bottom of the trans will drain out. A magnetic fill plug is the best way to trap ferrous chips. Most non-ferrous chips will just stay at the bottom until you take the trans apart.
Duke
Duke