I believe the factory fill DEXRON-VI ATF is already synthetic. It seems like a bit of an overkill to change it at 15K.Rat407 said:I haven't changed ours yet but it is still new. I will change it out with AMSOIL ATF at 15k, no sense waisting good new fluid to soon, with the price of gas I need to save my pennies.
I have not heard much about Royal Purple ATF or Redline. You just need to make sure that they meet Dexron VI specification.
I don't think your crazy Rat407, I do the same thing.Rat407 said:Yes the new GM Dexron VI is synthetic, but not all synthetics are created equal. It is just my standard practice to change out at 15k, from my experience the magnet in the pan has been packed with metal at that point and I like to clean it out from all that break-in material and go from there. <snip> Call me crazy. :blob: Plus my past experience with AMSOIL has been really good and I like it's track record. We keep our vehicles longer than most and they live a hard life. So from the fluid analysis's I have run on the engine oil and the ATF fluid all has looked great. So why not continue that trend. I'm not saying it is the way to go, it is just works for me. :thumb:
I will change the differential fluid the same time as the transmission fluid, around 20K use Royal Purple.2ACADIA2 said:See that's funny, becuase everthing I have read is saying that the fluid is 100K long life fluid doesn't need to be changed. So OK at least they give you an interval for the tranny.
My question is what about the differential? Are you guys changing this at the 15-30K interval too?
My cap was easy to removeCopperhead13 said:Went to check my trans fluid, and found the cap does not easily come off.
I don't want to force it and end up breaking something.
Anyone try to check the trans fluid yet?
That's pretty pathetic on GM's part. Apparently either GM thinks we are all complete idiots and can't figure out how to read a dipstick or they are just trying to push as much work into the dealer service departments as they can by making us think the dealer is the only one that can perform this task (kinda like changing light bulbs). :jsimms said:So if I never received the 07 manual I may have just figured there wasn't a way to check the fluid level because the 08 manual says there's no reason to check it. Thanks again Blue ;D
Now that starts another question; why is there so much difference between the two manuals?