Rebuilt 4-Speed, what are you guys using for gear oil?
#2772608
05/08/20 08:13 PM
05/08/20 08:13 PM
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Joined: Feb 2009
Posts: 1,149
NW New Jersey
RSI700VIPER
OP
super stock
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OP
super stock
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NW New Jersey
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I was going to use 90W synthetic gear oil but wanted to hear from the experts. What are you guys using?
1970 Superbird 440 Six BBL, 4-Speed, Dana, FJ5
1969 Daytona Charger 440 4-Speed, Dana, EV2
1971 340 Challenger Conv. Flemington Speedway Pace Car, FC7
1970 340 Six Pack Callenger T/A 4-speed T8 Tan
1971 340 Challenger RT Formal Roof, EV2 w/ V2 Stripe & Orange Houndstooth
1969 Talladega Torino, 428CJ
1969 Gurney Special Cyclone Spoiler II, 351 Cleveland
"Id rather have a bottle in front of me than a frontal lobotomy" Ben Franklin 1755
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Re: Rebuilt 4-Speed, what are you guys using for gear oil?
[Re: RSI700VIPER]
#2772624
05/08/20 09:24 PM
05/08/20 09:24 PM
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Joined: Dec 2004
Posts: 10,552
Rittman Ohio
fourgearsavoy
I Live Here
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I Live Here
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Rittman Ohio
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Do not use synthetic lube the old style syncros's work better with plain old dino oil. Penzoil syncromesh works good and Jamie Passon has a special blend that works too. Gus 
64 Plymouth Savoy
493 Indy EZ's by Nick at Compu-Flow
5-Speed Richmond faceplate Liberty box
Dana 60
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Re: Rebuilt 4-Speed, what are you guys using for gear oil?
[Re: 70sixpkrt]
#2772633
05/08/20 09:55 PM
05/08/20 09:55 PM
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Joined: Jan 2004
Posts: 367
Newark DE
Dogpro
enthusiast
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enthusiast
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Newark DE
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I also use the sta-lube but make sure you use gl4 most parts store gear oil is gl5 which can harm your syncro's
Lou P.
Newark DE
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Re: Rebuilt 4-Speed, what are you guys using for gear oil?
[Re: fourgearsavoy]
#2772683
05/09/20 01:39 AM
05/09/20 01:39 AM
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Joined: Aug 2003
Posts: 43,151
Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,151
Bend,OR USA
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Do not use synthetic lube . Penzoil syncromesh works good. Gus  That is what I'm using now in my NP 833O.D. trans 
Last edited by Cab_Burge; 05/09/20 01:40 AM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Rebuilt 4-Speed, what are you guys using for gear oil?
[Re: Cab_Burge]
#2772730
05/09/20 08:15 AM
05/09/20 08:15 AM
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Joined: Jan 2003
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md
mopars4ever
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I Live Here
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md
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The Sta Lube says it`s 80w90. What is the weight of the Pennzoil syncromesh ?
Last edited by mopars4ever; 05/09/20 08:16 AM.
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Re: Rebuilt 4-Speed, what are you guys using for gear oil?
[Re: mopars4ever]
#2772739
05/09/20 08:58 AM
05/09/20 08:58 AM
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Joined: Feb 2009
Posts: 1,149
NW New Jersey
RSI700VIPER
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super stock
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OP
super stock
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NW New Jersey
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I did a quick check on the internet and a few people are saying NOT to use Penzoil Syncromesh in cars made before 1992 while others love it. Same with Sta-Lube although I see more positive feedback. In 1992, I was using ATF in my A833s.
Last edited by RSI700VIPER; 05/09/20 08:59 AM.
1970 Superbird 440 Six BBL, 4-Speed, Dana, FJ5
1969 Daytona Charger 440 4-Speed, Dana, EV2
1971 340 Challenger Conv. Flemington Speedway Pace Car, FC7
1970 340 Six Pack Callenger T/A 4-speed T8 Tan
1971 340 Challenger RT Formal Roof, EV2 w/ V2 Stripe & Orange Houndstooth
1969 Talladega Torino, 428CJ
1969 Gurney Special Cyclone Spoiler II, 351 Cleveland
"Id rather have a bottle in front of me than a frontal lobotomy" Ben Franklin 1755
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Re: Rebuilt 4-Speed, what are you guys using for gear oil?
[Re: RSI700VIPER]
#2772743
05/09/20 09:09 AM
05/09/20 09:09 AM
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Joined: Aug 2005
Posts: 1,383
Az
69hemibeep
pro stock
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pro stock
Joined: Aug 2005
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Az
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Penzoil Syncromesh No complaints in 3 A833"s for me
1969 Hemi Roadrunner 2nd owner
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Re: Rebuilt 4-Speed, what are you guys using for gear oil?
[Re: mopars4ever]
#2772748
05/09/20 09:19 AM
05/09/20 09:19 AM
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Joined: Feb 2009
Posts: 1,149
NW New Jersey
RSI700VIPER
OP
super stock
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OP
super stock
Joined: Feb 2009
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NW New Jersey
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The Sta Lube says it`s 80w90. What is the weight of the Pennzoil syncromesh ? Found this on a site. The guy making this claim seems very knowledgeable based on other posts: That is very true, greg.
We have had this discussion many times in this formum about Synchromesh vs synchromesh and I am surprised so many people have NOT done any searches before or researching before entering into these discussions.
Then there is Pennzoil Synchromesh, a brand of synchromesh fluid by Pennzoil, a 9.5 cSt (about 0W30 weight) MTL with a GL-4 addpack.
Then there are the GM Synchromesh fluids brand which are 10.5 cSt (about 5W30 weight) MTLs with a GL-4 addpack.
I developed this list to assist in the selection of synchromesh-type fluids so please help me understand what is so confusing about it?
1970 Superbird 440 Six BBL, 4-Speed, Dana, FJ5
1969 Daytona Charger 440 4-Speed, Dana, EV2
1971 340 Challenger Conv. Flemington Speedway Pace Car, FC7
1970 340 Six Pack Callenger T/A 4-speed T8 Tan
1971 340 Challenger RT Formal Roof, EV2 w/ V2 Stripe & Orange Houndstooth
1969 Talladega Torino, 428CJ
1969 Gurney Special Cyclone Spoiler II, 351 Cleveland
"Id rather have a bottle in front of me than a frontal lobotomy" Ben Franklin 1755
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Re: Rebuilt 4-Speed, what are you guys using for gear oil?
[Re: 69hemibeep]
#2773063
05/10/20 04:02 AM
05/10/20 04:02 AM
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Joined: May 2006
Posts: 1,754
Phila
PhillyRag
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top fuel
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Phila
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Penzoil Syncromesh No complaints in 3 A833"s for me Why use such a light weight GEAR oil in these 4-speeds? Ease of shifting? Less gear friction? Or it contains "syncro" in name? Why not just heavy gear oil? Not like many, if any, will be driving them in the winter.
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Re: Rebuilt 4-Speed, what are you guys using for gear oil?
[Re: PhillyRag]
#2773086
05/10/20 09:02 AM
05/10/20 09:02 AM
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Joined: Aug 2005
Posts: 1,383
Az
69hemibeep
pro stock
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pro stock
Joined: Aug 2005
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Az
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It shifts better and its not all that light when you consider the factory suggests ATF for cold climates.
1969 Hemi Roadrunner 2nd owner
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Re: Rebuilt 4-Speed, what are you guys using for gear oil?
[Re: 69hemibeep]
#2773378
05/11/20 02:05 AM
05/11/20 02:05 AM
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Joined: May 2006
Posts: 1,754
Phila
PhillyRag
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top fuel
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Phila
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It shifts better and its not all that light when you consider the factory suggests ATF for cold climates.
They said ATF in later years as a "Band Aid" remedy to user complaints in cold weather of hard shifts. Of course: gear oil thickens in the cold, until driven only a few miles, then works fine. These weren't designed by Chrysler to "user friendly", but rather to transfer, and withstand, heavy loads They (Chrysler) weren't concerned about long-term (high mileage) effects (wear & tear). Sure: racing OK. Less frictional losses. But any geared power transfer unit (a833, rear axle) needs heavy gear oil for best lubrication properties.
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Re: Rebuilt 4-Speed, what are you guys using for gear oil?
[Re: PhillyRag]
#2773412
05/11/20 09:13 AM
05/11/20 09:13 AM
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Joined: Aug 2005
Posts: 1,383
Az
69hemibeep
pro stock
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pro stock
Joined: Aug 2005
Posts: 1,383
Az
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It shifts better and its not all that light when you consider the factory suggests ATF for cold climates.
They said ATF in later years as a "Band Aid" remedy to user complaints in cold weather of hard shifts. Of course: gear oil thickens in the cold, until driven only a few miles, then works fine. These weren't designed by Chrysler to "user friendly", but rather to transfer, and withstand, heavy loads They (Chrysler) weren't concerned about long-term (high mileage) effects (wear & tear). Sure: racing OK. Less frictional losses. But any geared power transfer unit (a833, rear axle) needs heavy gear oil for best lubrication properties. I'm going by what the Service manual suggests and they were under warranty. Is there a bulletin "They" put out saying ATF was not to be used?
Last edited by 69hemibeep; 05/11/20 09:15 AM.
1969 Hemi Roadrunner 2nd owner
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Re: Rebuilt 4-Speed, what are you guys using for gear oil?
[Re: 69hemibeep]
#2773466
05/11/20 11:17 AM
05/11/20 11:17 AM
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Joined: Dec 2004
Posts: 10,552
Rittman Ohio
fourgearsavoy
I Live Here
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I Live Here
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Posts: 10,552
Rittman Ohio
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I don't know if any of you guys have driven a manual trans Honda before but they use straight 30 wt, engine oil in their transmissions. They shift perfect at any temp and last 300K without any work on them  I haven't tried it in my stuff yet but I have added a quart of engine oil to Toyota truck transmissions before to aid in cold weather shifting issues. Gus
64 Plymouth Savoy
493 Indy EZ's by Nick at Compu-Flow
5-Speed Richmond faceplate Liberty box
Dana 60
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