'03 Tracker 2.5 v6 5sp. 4wd. For the manual transmission and transfer case the owner's manual recommends "Synchromesh Transmission Fluid (GM Part No. 12345349 or equivalent)". The Suzuki/tracker repair manuals recommends a GL-4 75w-90 or 80w-90 gear oil. The Synchromesh is a thinner oil. Does it have the extreme pressure additive like the GL-4 gear oil? Would a synthetic GL-4 75w-90 oil be the best choice?
manual trans. and transfer case fluid
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I would use a synchromesh such as Pennzoil or amsoil
I was under the impression that GL-4 had lower amounts of EP additives. GL-5 stuff is typically higher because it is used in differentials/hypoid gearboxes.
Redline's manual transmission lubes are supposed to have tons of anti-wear additive.
Originally Posted By: TallPaul
Redline's manual transmission lubes are supposed to have tons of anti-wear additive.
that statement is somewhat incorrect.
THEIR GEAR OILS do.
their MT oils are formulated differently.
they also have a GL-4 full syn. for regular MT's
and a GL-5 for hypoid diff's and combos like subaru/porche front axle/mt
they both have the proper FM's for use in a MT vs a friction reducing brew designed for a regular non MT application.
The redline for this application would be MTL (IIRC)
MT-90 would be too thick.
they also have a newer GL-4 70w80 MT fluid
and a GL-4 75w85
Their D4 ATF is also good and provides a GL-4 Level of protection.
Redline's manual transmission lubes are supposed to have tons of anti-wear additive.
that statement is somewhat incorrect.
THEIR GEAR OILS do.
their MT oils are formulated differently.
they also have a GL-4 full syn. for regular MT's
and a GL-5 for hypoid diff's and combos like subaru/porche front axle/mt
they both have the proper FM's for use in a MT vs a friction reducing brew designed for a regular non MT application.
The redline for this application would be MTL (IIRC)
MT-90 would be too thick.
they also have a newer GL-4 70w80 MT fluid
and a GL-4 75w85
Their D4 ATF is also good and provides a GL-4 Level of protection.
Last edited:
MolaKule
Staff member
Quote:
that statement is somewhat incorrect.
THEIR GEAR OILS do.
their MT oils are formulated differently.
they also have a GL-4 full syn. for regular MT's
and a GL-5 for hypoid diff's and combos like subaru/porche front axle/mt
they both have the proper FM's for use in a MT vs a friction reducing brew designed for a regular non MT application.
The redline for this application would be MTL (IIRC)
MT-90 would be too thick.
they also have a newer GL-4 70w80 MT fluid
and a GL-4 75w85
Their D4 ATF is also good and provides a GL-4 Level of protection.
He is correct. The Redline Manual Transmission lubricants have high levels of Anti-Wear Additives (AW).
You're thinking of Extreme-Pressure additives (EP) for differentials.
If your Operator's Manual says you can use the GM Synchromesh fluid, then the GM Synchromesh, Pennzoil Synchromesh, the Redline MTL70W80, and the Amsoil MTF all have the correct viscosity and AW package.
Do not use D4 ATF.
that statement is somewhat incorrect.
THEIR GEAR OILS do.
their MT oils are formulated differently.
they also have a GL-4 full syn. for regular MT's
and a GL-5 for hypoid diff's and combos like subaru/porche front axle/mt
they both have the proper FM's for use in a MT vs a friction reducing brew designed for a regular non MT application.
The redline for this application would be MTL (IIRC)
MT-90 would be too thick.
they also have a newer GL-4 70w80 MT fluid
and a GL-4 75w85
Their D4 ATF is also good and provides a GL-4 Level of protection.
He is correct. The Redline Manual Transmission lubricants have high levels of Anti-Wear Additives (AW).
You're thinking of Extreme-Pressure additives (EP) for differentials.
If your Operator's Manual says you can use the GM Synchromesh fluid, then the GM Synchromesh, Pennzoil Synchromesh, the Redline MTL70W80, and the Amsoil MTF all have the correct viscosity and AW package.
Do not use D4 ATF.
Last edited:
Originally Posted By: MolaKule
Quote:
that statement is somewhat incorrect.
THEIR GEAR OILS do.
their MT oils are formulated differently.
they also have a GL-4 full syn. for regular MT's
and a GL-5 for hypoid diff's and combos like subaru/porche front axle/mt
they both have the proper FM's for use in a MT vs a friction reducing brew designed for a regular non MT application.
The redline for this application would be MTL (IIRC)
MT-90 would be too thick.
they also have a newer GL-4 70w80 MT fluid
and a GL-4 75w85
Their D4 ATF is also good and provides a GL-4 Level of protection.
He is correct. The Redline Manual Transmission lubricants have high levels of Anti-Wear Additives (AW).
You're thinking of Extreme-Pressure additives (EP) for differentials.
If your Operator's Manual says you can use the GM Synchromesh fluid, then the GM Synchromesh, Pennzoil Synchromesh, the Redline MTL70W80, and the Amsoil MTF all have the correct viscosity and AW package.
Do not use D4 ATF.
The only exception to that last line might be for winter time use at or in the Arctic Circle.
Quote:
that statement is somewhat incorrect.
THEIR GEAR OILS do.
their MT oils are formulated differently.
they also have a GL-4 full syn. for regular MT's
and a GL-5 for hypoid diff's and combos like subaru/porche front axle/mt
they both have the proper FM's for use in a MT vs a friction reducing brew designed for a regular non MT application.
The redline for this application would be MTL (IIRC)
MT-90 would be too thick.
they also have a newer GL-4 70w80 MT fluid
and a GL-4 75w85
Their D4 ATF is also good and provides a GL-4 Level of protection.
He is correct. The Redline Manual Transmission lubricants have high levels of Anti-Wear Additives (AW).
You're thinking of Extreme-Pressure additives (EP) for differentials.
If your Operator's Manual says you can use the GM Synchromesh fluid, then the GM Synchromesh, Pennzoil Synchromesh, the Redline MTL70W80, and the Amsoil MTF all have the correct viscosity and AW package.
Do not use D4 ATF.
The only exception to that last line might be for winter time use at or in the Arctic Circle.
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