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Old 11-07-2012, 10:31 AM   #1
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To Change Transmission oil, or Not to Change?

I have heard two opinions about changing transmission oil. Both people have tons of experience towing and vehicle maintenance. However, the one that has more experience claims that we don't need to change transmission oil and the other guy claims you do? What are your thoughts?
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Old 11-07-2012, 11:03 AM   #2
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I don't know of any manufacturer that says you don't have to change the fluid. I follow my owners manual and change at recommended mileage. What does you manual say?
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Old 11-07-2012, 11:15 AM   #3
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IMO...when you run tranny temps around the 200 degree mark or higher, conventional tranny fluid breaks down due to high heat thus giving you less lubrication to the tranny parts.

Tranny fluid is the lifeblood for all the parts that make up the transmission, depending on your towing demands and manufacturers recommendations, I'd change accordingly.
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Old 11-07-2012, 11:25 AM   #4
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Change mine once a year!
Synthetic.

Nothing more needs to be said.


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Old 11-07-2012, 11:28 AM   #5
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Quote:
Originally Posted by Ragin Cajun View Post
IMO...when you run tranny temps around the 200 degree mark or higher, conventional tranny fluid breaks down due to high heat thus giving you less lubrication to the tranny parts.
I tend to agree although things are changing. My new Ford runs normally at 195 degrees. My guess is that fuel efficiency is enhanced by the higher temps. (Or why else do it?) And fluids keep getting better and better. But I think you are right about "conventional fluids". The newer synthetics are able to withstand a bit more IMO.
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Old 11-07-2012, 11:55 AM   #6
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Quote:
Originally Posted by acadianbob

I tend to agree although things are changing. My new Ford runs normally at 195 degrees. My guess is that fuel efficiency is enhanced by the higher temps. (Or why else do it?) And fluids keep getting better and better. But I think you are right about "conventional fluids". The newer synthetics are able to withstand a bit more IMO.
I believe the new trucks thermostaticaly control the trans temps now.

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Old 11-07-2012, 11:56 AM   #7
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Also with the Allison I'll be servicing both filters once a year and the spin on twice a year.
And of course 7 QTS dexron VI


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Old 11-07-2012, 01:06 PM   #8
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Unless you put lots of miles on your truck or tow weekly, I think you're wasting your money changing so frequently and using sythentic.
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Old 11-07-2012, 01:38 PM   #9
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Originally Posted by Len & Cheri
Unless you put lots of miles on your truck or tow weekly, I think you're wasting your money changing so frequently and using sythentic.
60.00 a year or a 3000.00 trans ......
Hmmmmmmmmm.

Synthetic also lowered my trans temps
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Old 11-07-2012, 04:03 PM   #10
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I need to shop where you shop if you can buy 7 qts of transmission fluid and 3 transmission filters for $60.

Your money. If you did it as recommended, you could afford to give B47 more then $25 for Vegas.
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