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Re: Synthetic tranny leakage--833 4 speed?
[Re: Pacnorthcuda]
#165622
12/10/08 09:50 PM
12/10/08 09:50 PM
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Joined: Apr 2007
Posts: 2,327
Glendale, AZ
69L78Nova
Banned. Forever.
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Banned. Forever.
Joined: Apr 2007
Posts: 2,327
Glendale, AZ
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I would never run synthetic in my box, even if it was free
1969 Nova
454/M21/3.31
Mild mid-11 second weekend cruiser
1994 F150 XLT Super Cab 2WD
5.0/4R70W/3.55
(Daily driver)
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Re: Synthetic tranny leakage--833 4 speed?
[Re: GreenBlurr]
#165629
12/10/08 11:42 PM
12/10/08 11:42 PM
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Joined: Jan 2003
Posts: 4,866
N. of 8mile, S. of heaven
Spike
Go Blue!!
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Go Blue!!
Joined: Jan 2003
Posts: 4,866
N. of 8mile, S. of heaven
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Quote:
Never put synthetic anything into something that was designed for real stuff. A. cause it will inexplicably leak like a sive, and B. cuase the sytnetic does not actually lubricate anything properly.
Man the misinformation here could fill a novel.
Synthetic oils, gear lubes, trans fluids for the most part have better detergent packages than conventional fluids.
If your motor, trans, rear end leaks after switching to synthetic fluids, you had a leak before it was just plugged up with all the junk found in conventional lubricants.
Replace the seal. Synthetic lubricants are compatible with the various seal materials and will not cause the seals to shrink, crack or degrade. The lubricants should cause the seals to swell slightly to ensure continued proper sealing.
Now the part about synthetic not be able to lubricate anything properly- where to start....
This could not be any further from the truth.
Synthetic lubricants have very good anti wear additives in them to prevent metal to metal contact. They flow better than paraffin based lubricants. They remain stable over a wider temperature range. They have superior film strength.
Here is a
Study of automotive gear lubes.
I'll put the proper synthetic lube in over a conventional lube any time.
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Re: Synthetic tranny leakage--833 4 speed?
[Re: Spike]
#165630
12/11/08 12:16 AM
12/11/08 12:16 AM
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Joined: Feb 2003
Posts: 2,069
Renton, WA
GreenBlurr
super gas
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super gas
Joined: Feb 2003
Posts: 2,069
Renton, WA
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Quote:
Quote:
Never put synthetic anything into something that was designed for real stuff. A. cause it will inexplicably leak like a sive, and B. cuase the sytnetic does not actually lubricate anything properly.
Man the misinformation here could fill a novel.
Synthetic oils, gear lubes, trans fluids for the most part have better detergent packages than conventional fluids.
If your motor, trans, rear end leaks after switching to synthetic fluids, you had a leak before it was just plugged up with all the junk found in conventional lubricants.
Replace the seal. Synthetic lubricants are compatible with the various seal materials and will not cause the seals to shrink, crack or degrade. The lubricants should cause the seals to swell slightly to ensure continued proper sealing.
Now the part about synthetic not be able to lubricate anything properly- where to start....
This could not be any further from the truth.
Synthetic lubricants have very good anti wear additives in them to prevent metal to metal contact. They flow better than paraffin based lubricants. They remain stable over a wider temperature range. They have superior film strength.
Here is a
Study of automotive gear lubes.
I'll put the proper synthetic lube in over a conventional lube any time.
In my best obi wan kenobi voice: "do not listen to this man. funny colored water is not what you want to fill your libricating cases with."
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Re: Synthetic tranny leakage--833 4 speed?
[Re: RussW]
#165634
12/11/08 02:39 AM
12/11/08 02:39 AM
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Joined: Feb 2003
Posts: 10,232
Someplace you aren't
SomeCarGuy
I Live Here
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I Live Here
Joined: Feb 2003
Posts: 10,232
Someplace you aren't
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I have a hard time getting anything but syn into the trans. I run my hose down the shifter hole and into the box. Redline pours right in fast. The dino juice takes FOREVER.
I've never had a problem with gear clash with the Redline stuff. 833 or 435 trans.
I want my fair share
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Re: Synthetic tranny leakage--833 4 speed?
[Re: Moparnut426]
#165635
12/11/08 09:28 AM
12/11/08 09:28 AM
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Joined: Nov 2003
Posts: 5,048
Atlanta Indiana
Dave Watt
master
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master
Joined: Nov 2003
Posts: 5,048
Atlanta Indiana
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Quote:
Pluss you shouldnt due to the syncros slipping. I know the old 833 uses the threaded bras stop rings, but if they are slightly warn, and not sharp, they can accually slip on the blocker hub causing poor shifting, and grinding gears.
Use the recomended old gunk.
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Re: Synthetic tranny leakage--833 4 speed?
[Re: Jeremiah]
#165639
12/11/08 11:08 AM
12/11/08 11:08 AM
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Joined: Nov 2007
Posts: 21,844
Kirkland, Washington
Pacnorthcuda
OP
Too Many Posts
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OP
Too Many Posts
Joined: Nov 2007
Posts: 21,844
Kirkland, Washington
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Quote:
I had a similar experience and switched back. No more leaks!
Thanks for the straightforward response! I will look for a GL-4 80-90 or 75-90 dino lube. Leaks suck
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Re: Synthetic tranny leakage--833 4 speed?
[Re: LAR_414]
#165641
12/11/08 12:15 PM
12/11/08 12:15 PM
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Joined: Jan 2003
Posts: 9,982
Ansonia, CT
CJK440
master
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master
Joined: Jan 2003
Posts: 9,982
Ansonia, CT
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The Pennzoil Syncromesh meets the same GM spec as the GM Syncromesh HPmike posted but cheaper.
I've used the Passon gear lube and it works well too.
2017 Contusion Blue Challenger T/A 392 M6 "BLKNBLU"
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Re: Synthetic tranny leakage--833 4 speed?
[Re: Pacnorthcuda]
#165644
12/11/08 05:03 PM
12/11/08 05:03 PM
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Joined: Jan 2003
Posts: 4,978
VA
DAMOPARS
master
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master
Joined: Jan 2003
Posts: 4,978
VA
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Quote:
Quote:
I had a similar experience and switched back. No more leaks!
Thanks for the straightforward response! I will look for a GL-4 80-90 or 75-90 dino lube. Leaks suck
Good old Dino lube  Why mess with the other crap. Unless you like it in your driveway. 
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Re: Synthetic tranny leakage--833 4 speed?
[Re: CJK440]
#165645
12/14/08 12:59 AM
12/14/08 12:59 AM
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Joined: Apr 2008
Posts: 1,285
Pacific NW USA
CompSyn
pro stock
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pro stock
Joined: Apr 2008
Posts: 1,285
Pacific NW USA
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Quote:
Forgot the details, but as something to do with sliders need friction to operate.
Correct! That’s why some properly formulated gear lubes come complete with friction modifiers.
Remember that not all lubricants are created equal.
If one specific synthetic lubricant falls short, does this automatically mean that all synthetic lubricants fall short?
Similarly, if a Mopar is what you desire, you don’t buy an Oldsmobile do you? No! Because even though they are both automobiles, there are some design differences that makes one more preferable in some applications over the other.
Besides, how many 60s and 70s Mopar muscle cars have you seen that are 100% leak free? It would seem that no matter how careful and attentive one is when it comes to installing new gaskets and seals, leaks can often develop regardless.
And if one uses a synthetic lubricant with a preconceived notion brought forth by urban myth that synthetic lubricants cause leaks and a leak occurs, then that obviously means that all synthetics lubricants are bad and nobody benefits from them. Or is it that a leak was going to develop anyway whether it was with conventional or synthetic?
If a gear lube is designated as an SAE viscosity and API GL-5, GL-4 specifications, whether conventional or synthetic, it shouldn’t be that far out of spec to cause detrimental effects when one is compared with the other. But then again, not all are created equal.
CompSyn
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Re: Synthetic tranny leakage--833 4 speed?
[Re: CompSyn]
#165646
12/14/08 03:42 PM
12/14/08 03:42 PM
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Joined: Jan 2003
Posts: 25,969
Rio Linda, CA
John_Kunkel
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 25,969
Rio Linda, CA
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Most leaks that occur after changing to synthetic are due to the change, not what it's changed to. If aged dino were replaced with fresh dino lube the leak could just as easily occur. I've successfully used synthetics that were formulated for synchro in older T-10's and 833's with vast improvement in shifting; especially when cold.
The INTERNET, the MISinformation superhighway
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Re: Synthetic tranny leakage--833 4 speed?
[Re: John_Kunkel]
#165648
12/15/08 03:05 AM
12/15/08 03:05 AM
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Joined: May 2005
Posts: 166
Los Altos Hills, CA
Dans 68
member
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member
Joined: May 2005
Posts: 166
Los Altos Hills, CA
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Quote:
I've successfully used synthetics that were formulated for synchro in older T-10's and 833's with vast improvement in shifting; especially when cold.
John, what synthetics do you recommend?
Dan
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Re: Synthetic tranny leakage--833 4 speed?
[Re: Pacnorthcuda]
#165652
12/15/08 04:48 PM
12/15/08 04:48 PM
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Anonymous
Unregistered
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Anonymous
Unregistered
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You didn't say where it was leaking.
I use MT-90 with no issues at all. Runs great.
There are a few things to keep in mind, when you re-build an A-833 tho.
#1 Most of the newer brass synchro rings have six oil slots on the inside. The original Mopar ones had three. If you are using the newer ones, you may have trouble. Those oil slots throw off too much oil on your gear races, plus they are weaker than the original 3 slot synchros. That is the first issue I see as a potential problem.
#2 Leaks can occur on the side cover shift lever seals. I had Liberty Transmissions modify mine with positive oil seals (no leaks).
#3 Run a thin strip of high temp silicone sealant on all case gaskets (both sides), to ensure they don't leak.
#4 Alway's replace your reverse switch gasket...it will leak if old.
#5 Check your tailshaft vent to ensure it is not stuck shut. If stuck, it will cause excessive pressure in the case, and possible leaks. Same vent is found on a 8 3/4" axle.
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