3800 Dexron III vs. Dexron VI

[MIKES3]

I was wondering how I should do this. I want to change my trans fluid out this Saturday. I am ordering Dexron VI. The new GM transmission fluid. I was told that this fluid is outstanding for the 4T65E-HD. However, I do not want my trans flushed, because of the bad things that could happen later on. I have 75,000 miles on the 04 and the last pan drop was done at 50,000 mile. Will it matter if I use 2 gallons of the Dexron 6 along with the left over Dexron III. What should I do?

Heres the P/Ns for the Deron VI in case anyone else is interested

88861003 (US) DEXRON®-VI Auto Trans Fluid (1 Quart Bottle)
88861045 (US) DEXRON®-VI Auto Trans Fluid (1 Gallon Bottle)

88861045 is the part number for Gallons... They ship it in by the case, 4 gallons...
It's $10.40 per gallon, case is $51.58 which inclues $9.98 shipping. That's enough for 2 fluid changes...


Go here to order: http://www.gmpartsdirect.com

Click to read more...

 

[syP]

Me personally... just a whole flush.

 

[bigsammoe]

whole flush at least u did a flush before this one,, go all the way

 

[MIKES3]

Originally posted by bigsammoe@Feb 14 2006, 02:45 PM
whole flush at least u did a flush before this one,, go all the way

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I have never done a flush and its not good to do it with high mileage.

 

[PANDA]

I was gonna put the Dextron VI fluid in my car when I did my pan drop back in January but I couldnt find anyone that would sell it to me they only had it in 50 gallon drums and not in quarts yet I guess. Ive even called some dealers and they didnt even know what it was. I guess it was just came out in December 05.

 

[phat_ridegt]

prolly not good to mix the two, ive never heard of it either and i work for a dealer. but i agree, i wouldnt do a power flush on it...ever. reguardless of the miles its hard on the cluthes ect w/ added pressure

 

[MIKES3]

 

[PANDA]

damnnnnnnn

Are you gonna change the filter too?

 

[MIKES3]

Originally posted by vipermike2002@Feb 15 2006, 07:11 AM
damnnnnnnn

Are you gonna change the filter too?

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You always change the filter when doing a pan drop. Heres what I am wondering. I know you can mix 2 different viscosities (spell check that) when it comes to the oil in our cars with out any harm. Why couldnt you do it with Dexron III vs. Dexron VI. Its the same stuff from what I hear but more improved.

 

[Royalgtp]

I will never do a flush


Always change the filter

I do mine about every 20k

 

[phat_ridegt]

i dont know much about it, but theoretically i guess it would make sense that they would be interchangable. i would find a dealer that uses the stuff and ask them about it. we have never used it

 

[XANAX]

what ca is this stuff in

 

[Toasty]

the new VI is interchangeable with the II ...

I would still reccommend a full tranny flush... 75,000 isnt too high to have one.
Now, I never reccomend a 'power' flush using an external pump, but rather the type that uses the tranny's own fluid pump to cycle the fluid out. you won't knock anything loose with one of these any more than just driving the car.
I am sure there is more than one company that manufactures this type of system, but the one i am most familar with is mf'd by TECH
this system simply connects inline with one of the external tranny lines and as the car idles, the trans will push old fluid out, pulling new in... no high pressure to mess up the trans, or any deposits inside...

obviously you want to drop the pan and change filter first

 

[MIKES3]

Heres some more info on the Trans fluid.

http://www.petro-canada.ca/eng/prodserv/lu..._8017_E_v14.pdf

I called the tech line at the bottom of the PDF and they said you can most definetly mix the 2. They said that ist an upgraded version of the dexron III