Synthetic Trans Fluid?
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Postmaster
Joined: Aug 2001
Posts: 4,270
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From: Delaware
Synthetic Trans Fluid?
I just had my E4OD rebuilt. The rebuilder recommends Synthetic Fluid. I had been using Dexron/Mercon in the past. I can't find Synthetic Dexron/Mercon.
What type should I use?
What type should I use?
Senior User
Joined: Aug 2012
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Should I replace the old ESP-M2C83-C automatic trans fluid that is in my Single Rail Four-Speed Overdrive with Mobil 1 synthetic ATF? If a Former Automatic Transmission Engineer says too, that would trump a transmission guy at a local shop? Mark Kovalsky,
Do you think that is Mobil 1 synthetic ATF is what I should replace the old stuff with???
Do you think that is Mobil 1 synthetic ATF is what I should replace the old stuff with???
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,725
Likes: 2,651
From: SE Florida
Synthetics or not synthetics only matters in how much money it costs to buy it. Synthetics can ALWAYS replace conventional fluids AS LONG AS THE RIGHT FLUID SPECIFICATION IS USED.
If you put a MERCON V synthetic in a C6 that requires Type F ATF that trans will fail in a VERY short time. On the other hand, if you put conventional MERCON V fluid in that same C6 it would also fail in a VERY short time. MERCON V is "slipperier" than Type F. Conventional MERCON V is EXACTLY as slippery as synthetic MERCON V.
Mileage is not a factor in the decision whether or not to use synthetics.
If you put a MERCON V synthetic in a C6 that requires Type F ATF that trans will fail in a VERY short time. On the other hand, if you put conventional MERCON V fluid in that same C6 it would also fail in a VERY short time. MERCON V is "slipperier" than Type F. Conventional MERCON V is EXACTLY as slippery as synthetic MERCON V.
Mileage is not a factor in the decision whether or not to use synthetics.
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New User
Joined: Oct 2013
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Is this the wrong stuff?
Valvoline MaxLife Dextron/Mercon (ATF) Automatic Fluid (1 Gallon)
[IMG]Trafile:///C:/Users/Bobcat/Downloads/8150020_mxl_773775_pri_detl.jpgnsmission[/IMG]
Valvoline MaxLife Dextron/Mercon (ATF) Automatic Fluid (1 Gallon)
[IMG]Trafile:///C:/Users/Bobcat/Downloads/8150020_mxl_773775_pri_detl.jpgnsmission[/IMG]
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New User
Joined: Oct 2013
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I went to my local auto store and bought the right stuff. The Pic I tried to post was a fluid with both Mercon and Dextron...I purchased Mercon only this time...now I have about 5 hours and $ 80 into this....instead of coming here and asking from the get go
I appreciate the responses , thank you...now I'm fighting the line going into the radiator...
I appreciate the responses , thank you...now I'm fighting the line going into the radiator...
Moderator
Joined: Jul 2011
Posts: 6,510
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From: Sioux Falls Area
By which criteria should one consider synthetic over conventional, if not extended intervals? That is to say, what is the advantage?
or am i misinterpreting?
also, on the C6, my 79 calls for mercon, is mercon V compatible that far back? And can it be safely mixed with mercon of unknown age?
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,725
Likes: 2,651
From: SE Florida
I meant that there is no mileage limit on an engine or trans where you can switch to synthetics. I've heard many people say that you should never switch if you have more than XXX miles or it will grenade. That's just not true.
I prefer synthetics when the vehicle is worked hard. If it is used as a commuter/grocery getter then I don't see any benefits from synthetics.
I prefer synthetics when the vehicle is worked hard. If it is used as a commuter/grocery getter then I don't see any benefits from synthetics.