BRHumbert

I cant seem to find P/N 88862472 at any of my local dealerships. They say they can order it but it will take 2 weeks and cost $28/quart. Is this the absolute best option for my 08 SS/TC with Limited Slip? I read this entire thread but am still kind of confused. Is the Redline 75W-90NS safe to use? Im guessing Royal Purple Synchromax or any other RP Product would be a no no. I want the absolute best and most recommended stuff. Thank you for any info.

Omnigear

iTrader: (4)

maven when you get the time will it be possible of makin a faq on this because this will be asked over and over again.
ike i recommend oem jm2c.
also people read the thread and then ask the question, maven is sharing information at least take the time to read the thread and see if your question have been answered.

metroplex

There aren't any compatible fluids with the GM 88862472 fluid specified for the F35 in 08-09 SS/TC. You are better off getting the right stuff and NOT using an aftermarket fluid.

Maven

iTrader: (1)

The 08-up fluid(88862472) is very hard to come by, I have been using 21018899 in its place, the newer "72" fluid is slightly thinner than the "99" but I havent heard any complaints from anyone. Ive even had to put the 99 fluid into warranty repair TC transmissions(because the new stuff can take so long to acquire), GM paid for it, so at least some people consider it an acceptable substitute.

BRHumbert

Thanks for the responses. I was about to pick up some AMSOIL MTG since it seemed like it fit the bill, but I will just wait it out for the factory stuff. Thanks!

xxxxsh4d0wxxxx

iTrader: (1)

This is correct for my 2008 2.2L (5-speed manual), no?

https://www.mobiloil.com/USA-English...on_VI_ATF.aspx

Dexron VI ATF..

Is this what comes stock?

Because my owners manual says Manual Transmission Fluid. GM Part Number: 88861800

Maven

iTrader: (1)

Dexron VI is correct for your car sh4dow

tlake84

What if I put Dexron VI in my TC.... and drove it for a day?

Maven

iTrader: (1)

Then you should be sure to flush it with the proper fluid.

06SS ALL DAY

if you have LSD go to the dealer, ask hem i need tranny oil for cobalt w/ lsd. it requires an additive because of the lsd

Maven

iTrader: (1)

no, it doesnt.

CobaltSSilver

Subd.....Maven you are the man. Thanks for sharing your knowledge from working on the cobalt so much. If I were in the area I'd have you work on my ride.

aterminatorz

Maven is this a do-it-yourself type maintenance? Pull the plug, fluid drains by gravity, put the plug back in, and pour the new fluid in until it comes out the fill hole? I heard the dealer charges something like $200 for transmission fluid change, is this true? If so, that does not make sense since they will change the motor oil for $70. I have the F35 transmission in an 08 Cobalt SS with 15,000 miles, never changed the transmission fluid before. I know the fluid lasts a long time, but I want to change it because the car is new and there might be metal shavings in there, peace of mind.

Maven

iTrader: (1)

Yeah, its only a little harder than changin engine oil. $200 is obscene, and sounds like they are charging you for an auto trans flush procedure, not for manual trans, manual trans should be about 1hr of labor and say $40-$50 for fluid.

metroplex

+1

We have a Quaife ATB limited slip. It wasn't really advertised or marketed very well. Ford, OTOH, really milks its advertising for all it is worth with the Focus RS. Quaife ATB? Check. RevoKnuckle? Check. It's basically the same setup as our SS/TC's (Quaife ATB and revised steering knuckles), but with a better interior and about $10k USD more.

They never ran the Focus RS against the SS/TC, but I suspect the SS/TC has the slight advantage due to reduced weight and better agility.The Focus RS couldn't beat a few cars that the SS/TC passed on the track.

SSchargedSS

just as long as everyone knows its not dextron III

terrible terrible dealers

usdm08

can u used the royal purple 75w-90 in a 08 ss/tc becuz i just got a brand new tranny with 0 miles from a 08 and i put it on my lsj and idk if u can used the royal purple

Maven

iTrader: (1)

Use GM 21018899, if you cant that or its always warm where you live or you plan on mercilessly beating your car you can use Redline 75w90NS, under no circumstances should you use ANY normal 75w90 .

05RLS2

iTrader: (1)

How often are you all changing out the fluid in the MU3s? I know that GM says that it needs no regular changes, I don't believe that. Is 45-50K miles a good time to change it, or should it still have plenty of life left to it?

Also what size allen wrench are you all using on the drain and fill plugs? I have looked at the before, and the drain plug looks really close to the crade. Which works better for this and allen key socket, or just a standard angled allen wrench?

RedSS50

iTrader: (2)

i just had the stealership change mine out at 44,000 and it shifts real smoothly. OK so I was raped on the cost, but hey...I get paid to use the car....

SSchargedSS

I changed mine at 60k.. it started shifiting a little harder so i figured change the fluid and it did the job. Im sure doing it a little sooner would be beneficial there is a how to on changing the fluid