Manual transmission fluid change question.
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Drifting
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From: Ridge, ny
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Manual transmission fluid change question.
Did a fluid change of my manual shift 2008 tranny/dif.. Allegedly this should entail 3.5 quarts. Neither did this drain out, nor did it go in. It took 2 quarts. Yes, the car was raised as straight as can be. Rhino ramps up front and two supports in rear. Need I worry? Please your advise please.
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Did a fluid change of my manual shift 2008 tranny/dif.. Allegedly this should entail 3.5 quarts. Neither did this drain out, nor did it go in. It took 2 quarts. Yes, the car was raised as straight as can be. Rhino ramps up front and two supports in rear. Need I worry? Please your advise please.
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Drifting
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From: Ridge, ny
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Did that.
Very curious. I have done four fluid changes on both T56 and T6060 trannies and it always took 3.5 to 3.75 qts. Only taking 2 quarts leads me to wonder if you got a good drain. Did you open the FILL connection and remove plug to allow the housing to vent when draining?? If not, you may have gotten the classic upside down coke bottle effect and not allowed all of the fluid to drain.
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Did a fluid change of my manual shift 2008 tranny/dif.. Allegedly this should entail 3.5 quarts. Neither did this drain out, nor did it go in. It took 2 quarts. Yes, the car was raised as straight as can be. Rhino ramps up front and two supports in rear. Need I worry? Please your advise please.
Most garage floors taper down 1/8" per foot toward the door to provide drainage. That can be a thing to consider if the surface you raise the car from is not level, you need to compensate for the difference.
Safety Car
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From: Opelika Alabama
Safety Car
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From: Opelika Alabama
My first question would be: Did you change the differential fluid by mistake and not the trans? Dif w/plugs at rear takes 2 qts vs trans w/plugs at side takes 3.65 qts (non Z51)
Most garage floors taper down 1/8" per foot toward the door to provide drainage. That can be a thing to consider if the surface you raise the car from is not level, you need to compensate for the difference.
Most garage floors taper down 1/8" per foot toward the door to provide drainage. That can be a thing to consider if the surface you raise the car from is not level, you need to compensate for the difference.
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St. Jude Donor '15
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You know, the service manual, it's the one that the dealer service techs use for '08's like the OP has.
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I use a level against the bottom of the floorboards checking both right and left hand sides. But to get the best drain, the front of the car needs to be higher than the rear since the drain plug is on the passenger side rear of the housing.
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Drifting
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From: Ridge, ny
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That's it.
My first question would be: Did you change the differential fluid by mistake and not the trans? Dif w/plugs at rear takes 2 qts vs trans w/plugs at side takes 3.65 qts (non Z51)
Most garage floors taper down 1/8" per foot toward the door to provide drainage. That can be a thing to consider if the surface you raise the car from is not level, you need to compensate for the difference.
Most garage floors taper down 1/8" per foot toward the door to provide drainage. That can be a thing to consider if the surface you raise the car from is not level, you need to compensate for the difference.
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Just to be clear for the Differential Housing fluid, the FILL plug is facing rearward toward the right hand muffler and the Drain is on the very bottom of the housing facing downward. The Tranny Housing FILL plug is on the upper left side facing toward the driver door with the Drain plug on the lower back right side facing toward the passenger door.
Last edited by GOLD72; Aug 18, 2015 at 01:12 PM.
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Drifting
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Thanks Gold72
Ouch. The tranny and diff housings are completely separate with two different spec fluids. The diff fluid to use will be 75W90 DEXRON LS. Starting with MY2009, that became the standard factory fill for all corvettes. DEXRON LS is recommended for older corvettes as well especially if they suffer from low speed turn chatter. An alternative fluid that I have had great success is AMSOIL Severe Gear 75W90. If the car was previously chattering, a 4 oz bottle of slip lock additive will be helpful. Both DEXRON LS and the AMSOIL Severe Gear both have slip lock additive already in the fluid mix.
Just to be clear for the Differential Housing fluid, the FILL plug is facing rearward toward the right hand muffler and the Drain is on the very bottom of the housing facing downward. The Tranny Housing FILL plug is on the upper left side facing toward the driver door with the Drain plug on the lower back right side facing toward the passenger door.
Just to be clear for the Differential Housing fluid, the FILL plug is facing rearward toward the right hand muffler and the Drain is on the very bottom of the housing facing downward. The Tranny Housing FILL plug is on the upper left side facing toward the driver door with the Drain plug on the lower back right side facing toward the passenger door.
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St. Jude Donor '15
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Drifting
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From: Ridge, ny
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Beware and check,
Here's a DIY which I found very misleading. It makes one believe the tranny and differential are the same. Check where it shows the drain plug for the tranny is.....
https://www.corvetteforum.com/how-to...mission-368419
https://www.corvetteforum.com/how-to...mission-368419
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From: Missouri City, TX
Race Director
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From: Missouri City, TX
Here's a DIY which I found very misleading. It makes one believe the tranny and differential are the same. Check where it shows the drain plug for the tranny is.....https://www.corvetteforum.com/how-to...mission-368419
https://www.corvetteforum.com/how-to...mission-368419
That is so messed up!!! Entitled how to change the tranny fluid but then proceeds to show you how to do both tranny and diff without telling you the difference between tranny and diff. It never clearly showed where the tranny drain plug was. Figure 4 shows relatively fresh Diff fluid draining and then Figure 5 showing Tranny fluid being pumped into the Tranny Fill port. This DIY is an Epic Fail.
Last edited by GOLD72; Aug 19, 2015 at 08:12 AM.