Roperteacher

Hey there!! I changed the G-56 fluid out on my new 07 to install the Amsoil ATF4. After a couple days I just popped under there to make sure everything was tight and no leaks etc.. I noticed that the Outer casing of the G-56 unit has surface cracks that look much like tire chracks on tires that have been sitting in the sun a while. I am assuming this is just an outside blemish or something. I can't rememebr seeing them on my 06 G-56. THey seem to be concentrated on the bottom of the trans rather than the upper. I was just curious... Thanks!!

Roperteacher

Thanks to John Holmes over at Carson Dodge... He explained the cracks as completely normal... The G-56 is SAND CASTED and the cracks are a result of the casting process...

Spooler

Yeap, it is normal for an aluminum alloy case to have cracks like this. Need to put gloves on to remove it also unless you want a ton of paper cuts on your hands.

Roperteacher

If it's normal, then I don't really care about it.. LOLOLOLOL Was just an interesting observation... Not sure why I didn't notice it when I was changing the fluid, only when I went to go ck it! LOLOL

D-Roc

What did you use to get the fluid in your G56?

mrblond

I use a cheap gear lube hand pump I think made by Stalube.

But with the bigger G56 trans and the high volume of fluid that needs to be pumped I would buy the best hand pump available.

Usually by the third quart im pretty tired. I think the G56 takes at least 6 quarts, about 2 more quarts then the NV5600.

The cheap Stalube pump has a adaptor at the exit end of the hose which kinda hooks that end into the trans fill hole. Works good!

Roperteacher

Since I installed the AMSOIL fluid, I used an AMSOIL pump. THey are 10 bucks and fit nicely over all their quart containers. I use the same thing for the Differentials, etc..