Royal Purpal in G56?
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Joined: Jan 2006
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From: San Diego
I run Mobil 1 75-90 in a 4X4 PU with a Muncie Getrag, im suppose to run this special grey crap from GM.
I got 343K miles out of the first Xmission on the Mobil 1 75-90. The trans shifts really good and runs smooth but shifiing in reverse will clunk pretty bad unless I shift into first gear first then all is well.
The G56 is such a good quality and good shifting trans I wouldn't risk puting the wrong stuff in.
My plan is to extend the service life of the G56 by running Amsoil Mopar+4 and change it often. I haven't decided at what change interval yet but it will be ahead of the factory schedule and based on how much I pushed it.
I got 343K miles out of the first Xmission on the Mobil 1 75-90. The trans shifts really good and runs smooth but shifiing in reverse will clunk pretty bad unless I shift into first gear first then all is well.
The G56 is such a good quality and good shifting trans I wouldn't risk puting the wrong stuff in.
My plan is to extend the service life of the G56 by running Amsoil Mopar+4 and change it often. I haven't decided at what change interval yet but it will be ahead of the factory schedule and based on how much I pushed it.
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Joined: Feb 2005
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From: Pueblo West
Some 60s Mopar manuals used atf but I don't know how many years they did. They would hardly shift with 90weight - I tried it! I don't know what atf4 is or what kind of atf is supposed to be in the g56 but I'd call RP to see if they have something for the g56. The RP Synchromax is much lighter than 75w90 but I don't know how it compares to atf but it sure works terrific in my NV5600. It wouldn't surprise me if it worked good in the g56. Craig
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Joined: Oct 2006
Posts: 676
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From: Cold Lake, Alberta
Some 60s Mopar manuals used atf but I don't know how many years they did. They would hardly shift with 90weight - I tried it! I don't know what atf4 is or what kind of atf is supposed to be in the g56 but I'd call RP to see if they have something for the g56. The RP Synchromax is much lighter than 75w90 but I don't know how it compares to atf but it sure works terrific in my NV5600. It wouldn't surprise me if it worked good in the g56. Craig
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Joined: Apr 2007
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GM DEXRON® II, III & VI
Ford MERCON®, MERCON® V & SP
Chrysler ATF+ through ATF+4®
Honda Z-1 (Not for use in CVT transmissions)
Toyota Type T and T-IV
Mitsubishi/Hyundai Diamond SP II & III
Allison C-3, C-4
Caterpillar TO-2
Voith G607, G1363
ZF TE-ML 14A, 14B, 14C
Mercedes Benz 236.1, 236.2, 236.6, 236.7, 236.9
BMW 7045E
NAG 1 & 2
JWS 3309
LT 71141 (ESSO)
Nissan Matic D, J & K
Vickers I-286S & M-2950S
Excellent for power steering units that use ATF.
Not for use in CVT transmissions.
PRODUCT DESCRIPTION
AMSOIL Synthetic Automatic Transmission Fluid (ATF) exceeds the performance requirements for domestic and foreign automatic transmission fluid applications. AMSOIL ATF provides automatic transmissions, power steering units and hydraulic equipment with excellent lubricating protection and better performance over a wider temperature range than conventional automatic transmission fluids.
Resists Oxidation and Thermal Degradation
AMSOIL ATF resists thermal and oxidative degradation better than conventional transmission fluids, protecting clutches, planetary gears, valves, pumps and seals from damaging sludge and varnish deposits. AMSOIL ATF helps prevent component overheating and ensures cooler, smoother transmission operation.
Provides Low Temperature Protection
AMSOIL ATF outperforms petroleum fluids in low temperature fluidity. In fact, AMSOIL ATF offers twice the cold temperature fluidity required by current automatic transmission fluid specifications. AMSOIL ATF provides easier starting, faster warm-ups, smoother shifting and improved fuel economy.
Antiwear Protection
AMSOIL ATF provides smooth shifting and long, trouble-free transmission life. In addition, the antiwear additive package makes AMSOIL ATF an excellent lubricant in other hydraulic systems. In tests designed to measure wear characteristics under severe service and high pressure operating conditions, AMSOIL ATF far exceeds the requirements of hydraulic equipment manufacturers.
Extends Drain Intervals
AMSOIL ATF is a stable formulation that lasts longer in service than conventional ATFs. It maintains its viscosity, friction and lubricating properties for extended periods of time, even under severe conditions. AMSOIL ATF maximizes transmission performance and service life while
reducing maintenance costs through longer drain intervals.
APPLICATIONS
AMSOIL Synthetic Universal Automatic Transmission Fluid is completely compatible with other synthetic and petroleum automatic transmission fluids. AMSOIL ATF is a universal, multi-functional fluid that greatly reduces the need for specialized fluid inventories and the possibilities of misapplication.
AMSOIL ATF is recommended for transmission, hydraulic and other applications requiring any of the following specifications:
SERVICE LIFE
AMSOIL Synthetic Automatic Transmission Fluid is recommended for use up to 50,000 miles under severe service* and up to 100,000 miles under normal service* or according to the vehicle manufacturer recommended intervals, whichever is longer. AMSOIL recommends thoroughly draining the transmission and flushing with new AMSOIL ATF to achieve a minimum 90% purity of new transmission fluid. Drain intervals may be extended further with oil analysis.
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