New A8 transmission fluid
Does anyone know the exact date of the new change over fluid at the factory for the A8 transmission?
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I'm not even sure they have changed the factory fill. The 2019 Owner Manual still shows the same GM product as before, though I've seen them be wrong year after year on other fluids. It's possible that the Mobil1 ATF is one of those "use it only if there is a problem with the GM stuff" things.
Thanks for asking the question, hoping someone will let us know... |
Robert, check out this thread. I think Jim is right. As far as I understand the new fluid has friction modifiers to help with the shudder in the A8's. I sure hope it does. My A8 shudders like me on a cold winters morn. :)
https://www.corvetteforum.com/forums...ple-flush.html |
Buddy at the plant confirmed with transmission guy it was at start of 2017 production. Have to take him at his word. Althiut I suspect even that guy is off a bit given the shudder issues with 17s.. my guess is around the time of the bulletin which I believe was December 2016. Meaning late 2017s had new fluid probably Jan 17 forward. Just a guess..
https://cimg2.ibsrv.net/gimg/www.cor...1728e61e8c.jpg |
Originally Posted by 16/C7Z
(Post 1598028591)
Buddy at the plant confirmed with transmission guy it was at start of 2017 production. Have to take him at his word. Althiut I suspect even that guy is off a bit given the shudder issues with 17s.. my guess is around the time of the bulletin which I believe was December 2016. Meaning late 2017s had new fluid probably Jan 17 forward. Just a guess..
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Originally Posted by falcon5619
(Post 1598029565)
I hope that the new fluid is a real fix but I can't help but wonder if the new fluid just helps to mask the underlying issue by slowing or reducing the shudder to manageable levels. If it were me I would use this new fluid in combination with the the Range AFM disable device and hope it will last the life of the vehicle.
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Originally Posted by ToQuick
(Post 1598029655)
I'm going to have them change my trans fluid as precautionary exercise. IMO cheap insurance.
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Cost of new fluid change if you pay for it yourself. I have not shudder but slight RPM flux that I am told is normal. I do use the Range device. Anyone know of cost?? Thanks
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Originally Posted by bjones7131
(Post 1598034395)
Cost of new fluid change if you pay for it yourself. I have not shudder but slight RPM flux that I am told is normal. I do use the Range device. Anyone know of cost?? Thanks
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Originally Posted by 1950silverstreak
(Post 1598034784)
I just had my 2016 Stingray done on last Thursday. Charge was $299.95. $30.17 for filter, $133.20 for Mobile 1 LV ATF HP, $$136.58 for labor.
But after reading people are still have problems even after the flush, I just don't know what to think. |
Originally Posted by jim spitzer
(Post 1598033761)
I had the new fluid changed on my 2017 vert and it did help a lot, but after 500 miles I had to have the TC replaced. now it does pretty good except the cold start up then it bangs from 1st to 2nd with a slight delay in between shifts. my car build date is sept 16
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Originally Posted by Sconn
(Post 1598034815)
Was your vert showing symptoms before the flush?
I love this car and I think about selling it but then what do you buy. I think the dealer that I go to will take care of it to finish getting the bugs out. My service writer does a great job He even tells me if I find a TSB just give him the number and the car and it will get done. Thats like my front bumper is showing a small paint chip where it rubs on the fender he will get it fixed and I showed him a ware mark on my seat bolster so he said that he will order a new seat cover for it. Once you get a comfort level with a dealer you just have to have the faith that they will take care of your car. Not all dealers are the same |
Ok, well that makes me feel better then. My '17 GS has no symptoms yet at 2400 miles. I just got the Range and plan to try it out today. Then I've got the flush scheduled for Thursday, along with an alignment after lowering on stock bolts.
Hoping the flush and Range will keep the TC happy for a few years :) |
The fluid is the fix. Not a masking of symptoms. The problem is IF YOU HAD THE OLD FLUID and it passed a certain amount of wear onto the tcc then the shudder will appear at some point.
i know before my warranty is up I will end up with a TC replacement. But for the next 3 years it ain't bothering me until it has to. Had the flush done under warranty last week and wont put enough miles on before winter to know if it did the trick. I'm sure by end of season next year the verdict will be in. |
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