Manual tranny gearlube suggestions
#1193344
03/08/12 12:48 PM
03/08/12 12:48 PM
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Joined: Aug 2003
Posts: 8,828
Houston, Tx
hemi68charger
OP
master
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OP
master
Joined: Aug 2003
Posts: 8,828
Houston, Tx
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Hey gang..
Asking for a friend. He has your typical A-833 18-spline gearbox in his '68 Charger R/T. He's been running natural/non-synthetic gear lube in it. He gets mixed input in regards to the type he should have in it. He lives in Western Colorado, so it gets really cold and naturally, the 1st 30 minutes or so of driving the shifting is rather stiff... Any suggestions? Is lighter gearlube better or should he just "deal" with the stiffness and go on down the road?
Thanks..
Troy
TroyHouston Mopar Connection Club'69 Charger Daytona 440 - auto - 4.10 Dana (now with 426 hemi) '69 Charger 500 440 - 4speed - 3.54 Dana '70 Road Runner 383 - 4speed - a/c (now with 440)
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Re: Manual tranny gearlube suggestions
[Re: hemi68charger]
#1193345
03/08/12 01:27 PM
03/08/12 01:27 PM
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Joined: Jan 2003
Posts: 4,722
Moved to N.E. Tennessee
GomangoCuda
master
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master
Joined: Jan 2003
Posts: 4,722
Moved to N.E. Tennessee
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Quote:
He gets mixed input in regards to the type he should have in it.
Won't be any different here.
Chrysler speced ATF for cold weather applications. Some people will say don't use it.
Pennzoil/Quakerstate/Texaco/GM Syncromesh fluid is very thin. I have been using it for a couple of years and not sure yet if I like it.
There are some synthetics out there. Make sure they are compatible with brass syncros.
Here is something I found about Syncromesh.
Pennzoil-Quaker State Synchromesh is a unique transmission and transaxle fluid that is not API "GL" rated. It has an approximate gear oil grade of about SAE 80W and can be used when temperatures range from -40ºF (-40ºC) to 300ºF (150ºC). According to Pennzoil's product description it is "formulated with high quality paraffinic base stocks, a fluidity modifier, multifunctional performance additives, corrosion inhibitors, a foam suppressor and a shear stable viscosity index improver additive. It provides excellent oxidation stability, low temperature performance, excellent synchronizer performance and compatibility with yellow metals, such as bronze, brass and copper components found in manual transaxles and transmissions." This description makes Synchromesh suitable for use in some transaxles or transmissions where GL-4 gear oils are specified.
A post on the message board at www.oilanalysis.com (http://www.oilanalysis.com/) found Synchromesh to consist of a ** 5W30** non-detergent oil with a friction modifer and an EP (extreme pressure) additive. It is made under contract for General Motors by Pennzoil (APC 3378) or by Texaco (Code 1874 MTX Fluid).
According to Don Johnson, Synchromesh fluid was developed for use in the New Venture manual transmission used by Chrysler and General Motors. Specifically, Synchromesh is formulated for transmissions that require GM Part No. 12345349 (Specification No. 9985648), GM Part No. 12345577, or Chrysler Part No. 4874464 (Specification MS-9224). Owners of Diamond Star Motors (DSM) Eclipse, Talon, and Laser cars with MMC (Mitsubishi Motor Corporation) transaxles have reported positive experiences using Synchromesh. The same can be said for owners of the Mitsubishi 3000GT and Dodge Stealth cars with the Getrag-manufactured AWD transaxles. The main benefit to DSM and 3/S owners seems to be excellent synchronizer performance, with reduced grinding and easier shifting compared to using some other gear oils.
Pennzoil Synchromesh Fluid can be purchased as that brand or as the equivalent products: Quaker State Synchromesh (Quaker State is part of Pennzoil), Texaco Synchromesh, GM Synchromesh, or AC Delco Synchromesh (part number 89021808).
In theory, there is no difference between theory and practice. In practice, there is.
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Re: Manual tranny gearlube suggestions
[Re: DAYCLONA]
#1193348
03/08/12 07:18 PM
03/08/12 07:18 PM
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Joined: Sep 2004
Posts: 22,873
Chicken coop
dustergirl340
Chicken Little
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Chicken Little
Joined: Sep 2004
Posts: 22,873
Chicken coop
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Quote:
80/90W gear oil.....period
X2 That's what we use.
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Re: Manual tranny gearlube suggestions
[Re: DAYCLONA]
#1193349
03/08/12 07:22 PM
03/08/12 07:22 PM
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Joined: Aug 2003
Posts: 7,063
Indiana
maxie
master
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master
Joined: Aug 2003
Posts: 7,063
Indiana
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80/90 GL4 not gl5 I went threw this with the road runner last summer and the best thing I found was red line MT90. I have it in the road runner and works great. You can buy a 1 gallon jug of GL4 80/90 from Danny Brewer http://www.brewersperformance.com/history.htm
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Re: Manual tranny gearlube suggestions
[Re: hemi68charger]
#1193352
03/08/12 10:35 PM
03/08/12 10:35 PM
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Joined: Nov 2003
Posts: 2,715
closer to Canadian beer!
torkrules
I'm neurotic
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I'm neurotic
Joined: Nov 2003
Posts: 2,715
closer to Canadian beer!
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Quote:
Hey gang..
Asking for a friend. He has your typical A-833 18-spline gearbox in his '68 Charger R/T. He's been running natural/non-synthetic gear lube in it. He gets mixed input in regards to the type he should have in it. He lives in Western Colorado, so it gets really cold and naturally, the 1st 30 minutes or so of driving the shifting is rather stiff... Any suggestions? Is lighter gearlube better or should he just "deal" with the stiffness and go on down the road?
Thanks..
Troy
I've been using Penzoil synchromesh for the past couple of years with good results. Passons fluid was good too. The seemed to have the same viscosity.
Keep in mind that the SAE rating for gear oil and motor oil is different. A 30 weight motor oil is around an 80/90 weight gear oil
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Re: Manual tranny gearlube suggestions
[Re: 135sohc]
#1193353
03/08/12 10:57 PM
03/08/12 10:57 PM
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Joined: Nov 2008
Posts: 671
Wisconsin USA
Bill MeLater
mopar
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mopar
Joined: Nov 2008
Posts: 671
Wisconsin USA
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Quote:
A transmission in good shape will not clash and grind with oil in it.
I agree: Unless it is very cold, and you happen to be driving the car it is installed in.
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Re: Manual tranny gearlube suggestions
[Re: sogtx]
#1193355
03/09/12 12:38 AM
03/09/12 12:38 AM
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Joined: Jan 2003
Posts: 9,436
Blair County,PA
62maxwgn
master
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master
Joined: Jan 2003
Posts: 9,436
Blair County,PA
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Quote:
Jamie Passon sells some secret stuff ..... 
Yep,he makes it in the woods behind his house. 
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Re: Manual tranny gearlube suggestions
[Re: Bill MeLater]
#1193357
03/09/12 01:25 AM
03/09/12 01:25 AM
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Joined: Feb 2012
Posts: 637
SoMd, USA
135sohc
mopar
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mopar
Joined: Feb 2012
Posts: 637
SoMd, USA
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Quote:
Quote:
A transmission in good shape will not clash and grind with oil in it.
I agree: Unless it is very cold, and you happen to be driving the car it is installed in.
I rebuild manual transmissions as a side hobby. Wear on the synchronizer collar and dog teeth comes from one thing: hard abusive shifting. No lubricant of any type will prevent that, changing your driving habits will.
The original 250,000+ mile new process A523 in my daily driver was driven gently all of its life. I removed it to rebuild it and install a LSD. Bought the master kit with rings and everything. Internally it looked almost brand new, plastic fork pads hardly had a scratch on them. It ran the factory fill 5w30 conventional motor oil from the day it left Sterling Heights and through 17 winters without grinding or excessive wear. The np523 uses a very similar brass cone setup as the 833 on its 3-4 & 5 gears.
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Re: Manual tranny gearlube suggestions
[Re: 135sohc]
#1193358
03/09/12 01:23 PM
03/09/12 01:23 PM
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Joined: Jan 2003
Posts: 9,436
Blair County,PA
62maxwgn
master
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master
Joined: Jan 2003
Posts: 9,436
Blair County,PA
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Quote:
Quote:
Quote:
A transmission in good shape will not clash and grind with oil in it.
I agree: Unless it is very cold, and you happen to be driving the car it is installed in.
I rebuild manual transmissions as a side hobby. Wear on the synchronizer collar and dog teeth comes from one thing: hard abusive shifting. No lubricant of any type will prevent that, changing your driving habits will.
Actually one more,driving with you hand resting on the shifter handle.
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Re: Manual tranny gearlube suggestions
[Re: hemi68charger]
#1193359
03/09/12 06:15 PM
03/09/12 06:15 PM
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Joined: Jan 2003
Posts: 21,073
Niles , Ohio
therocks
oh wait.but hey.lets see.oh yeah.
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oh wait.but hey.lets see.oh yeah.
Joined: Jan 2003
Posts: 21,073
Niles , Ohio
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I run 80/90 in my 65 4 speed also.Did have to replace a syncro back in 1970.Thats it.It still shifts great and is beat on all the time.Rocky
Chrysler Firepower
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