tranny fluid - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 11 (permalink) Old 03-26-2008, 05:38 AM Thread Starter
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tranny fluid

anyone running synthetic in their auto tranny? looking to pick up any edge I can in mileage and it's almost time for a tranny service

01 quad cab 4x4, edge drag comp, 4" exhaust, fass 150, 250 ddps, Jefferson State compounds 683hp so vp 11.91. AMSOIL front to rear. now back to stock 95 fummins in the works
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post #2 of 11 (permalink) Old 03-26-2008, 04:59 PM
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Well I can't really make a comment really... All NV4500 trans require Castrol SynTorque... So I'm already running...

As for mileage speed is the biggest factor... But a good rule of thumb stay below 600*F and 5 PSI worth of boost and you'll get 20+ MPG's...

45 MPH - 28.6 MPG - 1,308 RPM's - 27.7 Horsepower - 500*F Pyro - 1-2 PSI Boost


65 MPH - 14.8 MPG - 1,880 RPM's - 74.6 Horsepower - 700*F Pyro - 8 PSI Boost


Slowing down will net you better results that spending big money on fluids... :

Michael Nelson - 2002 Dodge Cummins & 1996 Dodge Ram 5.9L Gasser
116K Miles On My VP44 - 4 Years of 2 Cycle Oil Diet! - Mixed at 128:1 Ratio - 25.3 MPG maxed out!
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post #3 of 11 (permalink) Old 03-26-2008, 10:02 PM
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Quote:
Originally Posted by Mopar1973Man
Well I can't really make a comment really... All NV4500 trans require Castrol SynTorque... So I'm already running...

As for mileage speed is the biggest factor... But a good rule of thumb stay below 600*F and 5 PSI worth of boost and you'll get 20+ MPG's...

45 MPH - 28.6 MPG - 1,308 RPM's - 27.7 Horsepower - 500*F Pyro - 1-2 PSI Boost


65 MPH - 14.8 MPG - 1,880 RPM's - 74.6 Horsepower - 700*F Pyro - 8 PSI Boost


Slowing down will net you better results that spending big money on fluids... :


:iagree I have a 2001 with an automatic and if you keep your RPM's down around 1400 to 1600 you get awsome mileage on the highway. I got 3.54 gears in my truckand at that RPM i am doing 55 MPH. some of us don't like to do that spped cause they think its slow, but it does help out with the milage. If I start going past 1800 the trucks getting more in the power band so you lose on milage. My tranny has the ATF+4 tranny fluid in it from the dealer when I had it flushed. No mileage difference at all, just helps keep everything lubricated better. Hope that helps you out.
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post #4 of 11 (permalink) Old 03-27-2008, 08:44 PM
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Lots of people use the Amsoil trans fluid. many dealers on this site. does it really help? I really can not say since I change my fluid and filter yearly. fresh fluid is always better than old. some people have deeper pockets than others.

2001 Dodge quadcab 4x4,Auto transmission,Fass 150/150 pump, Among other upgrades.
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post #5 of 11 (permalink) Old 03-27-2008, 10:54 PM
 
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Quote:
Originally Posted by 01quadcab
anyone running synthetic in their auto tranny? looking to pick up any edge I can in mileage and it's almost time for a tranny service
Ya I would considering you have a aftermarket T/ C. I got Amsoil in everything.

The stock T/C don't seem to like synthetic, I've had issues with them slipping with synthetic and draining the synthetic. To replace w/ dyno oil to have the problem solved.
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post #6 of 11 (permalink) Old 03-28-2008, 04:23 AM Thread Starter
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well, it's getting time for me to service mine and there isn't much difference between atf4 and amsoil so I thought I would find out how it worked, and if there was any issues. I just bought some gear oil from amsoil to service the diffs as they have not been done since the truck has been in the family. Philly what fluid are you runnin?

01 quad cab 4x4, edge drag comp, 4" exhaust, fass 150, 250 ddps, Jefferson State compounds 683hp so vp 11.91. AMSOIL front to rear. now back to stock 95 fummins in the works
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post #7 of 11 (permalink) Old 04-02-2008, 01:33 AM
 
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Amsoil everything. I've had nothing but good luck with Amsoil. I'm not a dealer or nothing, nor can I even recommend a dealer to you. I just have had luck with it for many years.

EDIT:
Amsoil in my 98
Engine: 15w40 Full syn,
Transmission: Uni ATF (I used this also as my first fluid as well when I first put the rebuild in too)
Dif: 75w90 extreme.(no additives either)


Amsoil in my 02
15w40 full syn, 5w30 tranny fluid(6speed), Uni ATF in the transfer case and 75w90 in both axles (no additives either)
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post #8 of 11 (permalink) Old 04-02-2008, 05:35 AM Thread Starter
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thanks for the info. I did the front and rear last night so it's all fresh and used the sever gear. next its the tranny. then when I am need motor oil I will do it too and see how it works for me

01 quad cab 4x4, edge drag comp, 4" exhaust, fass 150, 250 ddps, Jefferson State compounds 683hp so vp 11.91. AMSOIL front to rear. now back to stock 95 fummins in the works
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post #9 of 11 (permalink) Old 04-02-2008, 12:43 PM
 
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Loosen the screws on your v/b to get tons more fluid out. Just remember to retorque to 105 in/lbs.
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post #10 of 11 (permalink) Old 04-02-2008, 04:48 PM Thread Starter
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that or just flush the system while idling till I see a change in color. helps get it out of converter and cooler. I always buy extra fluid in case of oops. what about doing the bands I remember you talking about that a while back

01 quad cab 4x4, edge drag comp, 4" exhaust, fass 150, 250 ddps, Jefferson State compounds 683hp so vp 11.91. AMSOIL front to rear. now back to stock 95 fummins in the works
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