anyone have royal purple or any other high performance fluid for their transmission? I want to start building my cobalt into a beast, but afraid the little crappy transmission cannot handle it. I do not have money for an lsd so that is not an option. Anyone do anything to prevent their trans from taking a dump such as royal purple ect....would like to hear your thoughts.

 

Stick with GM fluids.. Not being a dick but there is a thread floating around and this guy used the "other stuff" and his trans took a dump on him..

 

well gm is always the best, but for hard driving the trans in performance applications don't you think a performance fluid would be best. Of course you would have to find the right spec fluid for the trans, which I assume the person that the trans dumped didn't do. Most people go 'royal purple, this is good stuff', but fail to get the rarity of the performance fluid for their trans application. idk.

 

stick with the GM fluid. you can upgrade to the 2.0 LNF(2008-2010 turbo cobalt) trans fluid if you would like. apparently its much better than the LSJ trans fluid

 

Does the F23 tranny use the same fluid as the F35?

 

How is our trans a "little crappy transmission"?

That was a stupid thought from you.

 

No, the f23 uses a form of ATF as far as i know.

 

 

Damn... was hoping there was a better option from GM for our F25 equipped balts.

 

i second that, the tranny doesnt have problems at high hp as long as you use it correctly

 

Look for a post made by ss/sc craver I belive he had problems with royal purple directly.
It's your decision I will always use gm trans fluid..

 

there was a post on this and gm says they rate the trans fluid with rl or tl or what ever rating 3 and mobil 1 and royal purple are 5+ and are alot better the deal who installed my clutch put new gm stuff in it and it feels like **** now and now ima have to run royal purple

 

this

 

maybe not "crappy", but it really doesn't handle alot of hp. I was talking to a chevy dealer mechanic and he was telling me that "these transmissions cannot handle alot of power, you would need lsd or trans swap for big power". big power is my guess of 310hp plus.

I guess it is gm fluid all day every day! anyone know what the spec are for the turbo 08-2010 transmissions and can verify they are the same?

 

dude dont listen to a dealer mechanic. sorry to say but most of them are just parts changers that know nothing about specifics in these cars. there are plenty of people in the +400whp and +350wtq range. the SC and TC transmissions are exactly the same minus the taller final drive in the TC trans

 

Use the factory stuff or Redline 75W90NS ONLY.

So he said an LSD would help the transmission gain a higher torque rating?

Disregard anything this tech has ever told you.

 

lol. idk guys. is this trans the ss's have different than the regular eco tec's?

 

You have no idea how hard I'm laughing right now. Thanks for that, I owe you a beer for this one. Ahahahahaha

Please continue. 310hp is way too much for our trans. That's why they didn't come with over 310hp from the factory. Duh.

 

Huh? are you agreeing with me? nonetheless where is my beer?! Sorry I do not know alot about the cobalt, I bought it like a week ago.

 

I was just laughing, don't mind me.

Just do your research, search around the site, and read up on what others have posted. The car has been around for 5 years now. Most everything has been done before, and you can find out alot by others posts.

 

did you post this before??? or am I having dejavu? I swear to god that exact statement I read on here somewhere......huh (walks to the bathroom to have a cigarette with very confused look on face)

 

Dont go there, I dont care if a someone gave u that on navigation dont go there..lol understan..

my buddy used royal purple and his trans when bye bye.. going about 120 it decided to go boom..lol

 

Iv been using RP 75-90 gear oil. its Gl-4 and i haven had any issues in 2 years

 

first. that tech is an idiot. pure and simple.

second, RUN OEM TRANS FLUID ONLY.

 

Uh oh, I 've had royal purple in since my clutch change. Will change stat.