Cadillac CTS-V 2004-2009 - Best Transmission fluid

I have an 04 cts-v and just hit 44,500 miles I might be having some syncro issues i dont kno for sure. If I replaced the tranny fluid would that help the issue? and whats the best transmission fluid there is for my car?
And is there a good warrenty I can buy for my car that will cover all this shit?:(

I have an 04 cts-v and just hit 44,500 miles I might be having some syncro issues i dont kno for sure. If I replaced the tranny fluid would that help the issue? and whats the best transmission fluid there is for my car?
And is there a good warrenty I can buy for my car that will cover all this shit?:(


I put B&G in my rear end, for the trans I just used to recomend GM dextron 3.

Some use syncromesh for the trans but I think its alittle to thick and wouldnt do good in cold weather with the small internal parts of the T56..

I used Amsoil ATF and have been happy with it.

What are your trans symptoms?

Sometimes I cant shift into 5th or 6th. Then ill go back into 4th and then it lets me hit 6th...

Well the trans fluid change is easy enough to do, so I would do that and also have the clutch fluid bled and changed. That would be the best start at tackling the problem.

I just bought syncromesh tranny fluid and am changing it today
I do the clutch tomorrow hopefully ill see results

I just bought syncromesh tranny fluid and am changing it today
I do the clutch tomorrow hopefully ill see results


do u live in a area that gets below 32 degrees F ?

I do but im moving to arizona in a week.. So I should be fine with the syncromesh. Right?

Royal Purple makes a synthetic.....Haven't tried it yet, but only heard good things.

I do but im moving to arizona in a week.. So I should be fine with the syncromesh. Right?

From what ive read yes, theres alot of threads in the transmission and drivetrain part of this forum .

take a look