are diff and trans on different fluids?
Thread Starter
Drifting
Joined: Mar 2011
Posts: 1,564
Likes: 31
From: Land O' Lakes/Tampa Florida
St. Jude Donor '12-'13-'14
are diff and trans on different fluids?
So I got the oil changed today and considered changing the diff and trans fluids. Now with it being a rear trans car, are there separate transmission fluid and differential fluids? I looked at the trans today while it was on the lift and I noticed a fill plug in the middle on what would on a normal rear end be a differential cover and then another drain plug on the bottom towards the back of the case. I didnt see anymore drain or fill plugs and Im sure that I havent seen any trans dipsticks on this car. IF the trans has a separate fluid, where would the plugs be? or is this done only ata dealer with a special machine?
Dumb question to some I'm sure and yes I tried search. NO I did not check the manual first and If I had, there probably wouldnt be a need for a tech forum....
Thanks for the education in advance.
Dumb question to some I'm sure and yes I tried search. NO I did not check the manual first and If I had, there probably wouldnt be a need for a tech forum....
Thanks for the education in advance.
Race Director
Joined: Mar 2005
Posts: 10,399
Likes: 26
From: Austin Texas
Somebody needs to tell GM and most publications. Many of the articles written about Corvettes mention a transaxle.
Dictionary says a transaxle is one unit containing both the transmission and the differential. One unit means only one case or housing and since it's all one case it must be only one fluid.
Most front drive vehicles have transaxles that use ATF only.
Thread Starter
Drifting
Joined: Mar 2011
Posts: 1,564
Likes: 31
From: Land O' Lakes/Tampa Florida
St. Jude Donor '12-'13-'14
Thanks gang, anyone got pics of the location of the trans plugs and maybe a "How to"?
or maybe the plugs I saw today are for the trans and Im missing the diff plugs?
or maybe the plugs I saw today are for the trans and Im missing the diff plugs?
Race Director
Joined: Aug 2005
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From: Hudson WI
NCM Sinkhole Donor
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Team Owner
Joined: Mar 2008
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From: Southern Utah
My understanding is that the six speed auto uses Dexron VI, like the rest of GM automatics but the manual uses Dexron III and specifically says not to use Dexron VI. This is why they put a label right at the drain plug that says Dexron III only.
Thread Starter
Drifting
Joined: Mar 2011
Posts: 1,564
Likes: 31
From: Land O' Lakes/Tampa Florida
St. Jude Donor '12-'13-'14
2005 LS2 Automatic 4 speed Z51 package.
Wish I had waited a year and gotten the 06 A6 Z51 w/paddle shifters. duh! But hey the deal I got on this one made up for it.
Team Owner
Joined: Mar 2008
Posts: 21,502
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From: Southern Utah
Well, the owners manual says Dexron III but I think that when they came out with Dexron VI, they said it could be used in previous autos that used Dex III, but I'm not absolutely sure. I know Dex VI is absolutely not recommended for the manual...Dex III only. Many people like the 4 speed auto better than the six, so don't feel like you are missing out.
Race Director
Joined: Aug 2005
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From: Hudson WI
NCM Sinkhole Donor
This off the Red Line website. I change my 06 to Red Line in 2006 at about 1,000 miles. We took my diff out last year and there was no carbon buildup at all inside the case. You also don't need add the clutch additive.
I put D4 in my wife's car and she asked what I did to her car because it shifted smoother.
I am so sold on the product, that when I retired, I went to work for them.
D4 ATF - quart
For use as power steering fluid in this vehicle
For use in 6 speed manual transmission
For use in automatic transmission
75W90 GL-5 Gear Oil - quart
For use in rear differential
I put D4 in my wife's car and she asked what I did to her car because it shifted smoother.
I am so sold on the product, that when I retired, I went to work for them.
D4 ATF - quart
For use as power steering fluid in this vehicle
For use in 6 speed manual transmission
For use in automatic transmission
75W90 GL-5 Gear Oil - quart
For use in rear differential
Thread Starter
Drifting
Joined: Mar 2011
Posts: 1,564
Likes: 31
From: Land O' Lakes/Tampa Florida
St. Jude Donor '12-'13-'14