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Re: Recommend 833 4 Speed Fluid??
[Re: hemibuzz]
#294210
04/20/09 07:45 PM
04/20/09 07:45 PM
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Joined: Dec 2007
Posts: 18,157
Mass
DAYCLONA
I Live Here
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I Live Here
Joined: Dec 2007
Posts: 18,157
Mass
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Re: Recommend 833 4 Speed Fluid??
[Re: 340SHORTY]
#294214
04/21/09 07:45 AM
04/21/09 07:45 AM
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Joined: Jan 2003
Posts: 21,065
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: 21,065
Niles , Ohio
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My 65 oe 4 speed nothing but 90 wt gear oil.Still like new.Rocky
Chrysler Firepower
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Re: Recommend 833 4 Speed Fluid??
[Re: TOMRR]
#294219
04/21/09 08:50 PM
04/21/09 08:50 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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There are many favorites out there but the one oil to avoid is any gear oil that is GL5 rated.
2017 Contusion Blue Challenger T/A 392 M6 "BLKNBLU"
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Re: Recommend 833 4 Speed Fluid??
[Re: Silverbullet2]
#294220
04/21/09 08:52 PM
04/21/09 08:52 PM
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Joined: May 2005
Posts: 6,446
NJ-USA
HPMike
master
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master
Joined: May 2005
Posts: 6,446
NJ-USA
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Quote:
I've been looking for Pennzoil Synchromesh locally and nobody seems to stock it. I have access to BG synchro shift and it's GL4 rated. Anybody ever tried it?
Just go to any GM dealer and get Synchromesh.
MB
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Re: Recommend 833 4 Speed Fluid??
[Re: CJK440]
#294225
04/22/09 10:38 AM
04/22/09 10:38 AM
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Joined: Dec 2004
Posts: 2,367
Wheatfield, NY
Cuda340
top fuel
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top fuel
Joined: Dec 2004
Posts: 2,367
Wheatfield, NY
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Quote:
Quote:
Whats wrong with GL-5 Rated 90W???
Somebody correct me if I am understanding this wrong but the GL-5 has an extreme pressure additive package that works great to eliminate friction on high PSI contact like ring and pinion tooth contact. Problem is it also does the same thing when the the points on the inside of the brass rings try to grip the cone of the gears when shifting. You want that brass to lock onto that taper quick and stop that gear as soon as possible.
You are correct sir....  
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Re: Recommend 833 4 Speed Fluid??
[Re: Cuda340]
#294226
04/22/09 11:03 AM
04/22/09 11:03 AM
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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 accidently put a GL-5 oil in my trans one time and it wouldnt even go into gear. Put the Pennzoil back in....like butter
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: Recommend 833 4 Speed Fluid??
[Re: Dennis_K]
#294231
05/05/09 05:00 PM
05/05/09 05:00 PM
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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:
CompSyn, I'm only asking since you know your Amsoil products, is there a reason you recommended the 75W90 stuff instead of this? This is the one that I found at my local Napa store and am using in my Charger. http://www.amsoil.com/storefront/mtf.aspx?zo=1606470
Dennis,
Going by the 1969 Plymouth service manual, the 4-Speed transmission came with SAE 140 gear lube. The service manual goes on to state that in colder weather, use an SAE 80, SAE 90 or ATF.
This is what the Amsoil Technical Service Bulletin says:
API GL-4
AMSOIL product recommended for GL-4 applications is:
• MTG (SAE 75W-90)
"AMSOIL MTG is recommended for automotive and light truck GL-4 applications where 75W-85, 75W-90 or 80W-90 viscosities and GL-4 performance specifications are recommended. MTG is ideal for muscle car transmissions such as Muncie, Borg Warner, Saginaw, Ford Toploader, Dearborn and New Process. Also recommended for Gear Vendors Gear Splitters."
Now let’s compare the differences between the viscosities.
The factory fill SAE 140 has a viscosity of between 24-to-40.99 @ 100-degrees C.
Amsoil Synthetic Manual Transmission and Transaxle Gear Lube 75W-90 API GL-4 (MTG) has a viscosity of 14.7 @ 100-degrees C.
Amsoil 5W-30 Synthetic Manual Synchromesh Transmission Fluid (MTF) has a viscosity of 9.6 @ 100-degrees C.
Amsoil Synthetic Universal Automatic Transmission Fluid (ATF) has a viscosity of 7.6 @ 100-degrees C.
So from comparing the viscosities we can see that as per Plymouth recommendations (circa 1969), you could use a viscosity of 7.6 in colder conditions and up to 40.99 in warmer conditions. Of course lubrication technology has changed immensely since 1969 and we now we have multi-grade gear lubes that don’t have to be change out as per seasonal climate conditions.
As far as comparing the Amsoil 5W-30 (MTF) and 75W-90 (MTG), the 75W-90 is a little thicker and has a little bit more pressure additives for heavier-duty/higher horsepower applications. Further the 75W-90 is a balanced API GL-4 formulation so it doesn’t incorporate the extreme friction modifiers found in API GL-5 gear lubes. This means the 75W-90 (MTG) won’t make for harder shifts.
I’d say if you baby your Charger, the 5W-30 Synthetic Manual Synchromesh Transmission Fluid (MTF) will work fine for you. However, if you have a lead foot or like to race your car sometimes where transmission temperatures might be increased, then I’d think about switching to the 75W-90 Synthetic Manual Transmission and Transaxle Gear Lube API GL-4.
Hope this helps,
CompSyn
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