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Fluid Check 100,000 Mile

1981 Views 17 Replies 7 Participants Last post by  bobstoy
Hello all,

I want to start by saying I've done a lot of research on this site so I'm pretty sure I know what I need for materials but I just wanted to verify. Below is a picture of the fluids I purchased today at cut rate auto parts to do a transmission filter change and differential fluid change. My car is an 3.6L 04 and it has 98k miles on it.

Starting from left to right:

First as you can see I have Mobil 1 synthetic gear lubricant, I have 2 quarts.

Next I have Super ATF transmission fluid. I purchased 7 quarts because I was told the reservoir holds 6.2.

Next is some KW knock'er loose penetrant. I just sprayed this on the nuts for the transmission pan.

Next is GM limited slip. Now I was unsure if i needed this but I was wondering that if I don't will it hurt anything? My diff makes a good amount of noise on acceleration but from what I'm told, all of our cars do.

Finally a T45 drive bit.

Also I have a fluid transfer pump so I can easily fill the reservoirs.

Now I Just wanted to know before I continue do i have all the correct fluids? I was told to get the differential plugs i need a 10mm allen wrench, which i have.

Lastly do i need to spray the caps for both the transmission and differential with the knock'er loose? I believe my transmission has never been serviced so I don't want to strip any bolts.

Please let me know what you think. I am following the diagrams linked below:



Thank you in advance guys.
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Yup. The only reason I say to get 6 is because GM no longer licences 3 and it might not be exactly what they say it is.
Is there any reason to suspect ATF manufacturers (in this case, Conoco) have changed their DEXRON III?

It can't hurt to swap the Super ATF for some DEXRON-VI, but I wouldn't worry about what you've got.
I don't understand where the confusion / "sketched out"-ness comes from.

The bottle says "recommended for use in all domestic and import vehicles no longer under warranty where the OEM previously specified a GM DEXRON III or earlier generation DEXRON fluid"
This is true of your car. DEXRON-III was the factory fill for your car, and if you read the Owner's Manual, I'm sure that's what it tells you to use.

It later says "do not use in automatic transmissions that require a GM DEXRON VI" and a couple other of fluids by ford. So what does this mean?
For you, it means nothing. DEXRON-VI didn't exist until 2005, so your 2004 could not possibly have required it.

Is it worth it to spend the extra money and go buy some DEXRON VI?
There may be some mileage benefits (that was one of the purposes of GM changing from DEXRON-III to DEXRON-VI). Whether that benefit will actually be measurable, I have no idea. There's absolutely nothing wrong with using either DEXRON-III or DEXRON-VI in your transmission; whether the VI is "worth it" is up to you.
1 - 2 of 18 Posts
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