Amsoil Syn in G56 / Transfer Case / Axles

[RJOL]

Just ordered some Amsoil Syn ATF (ATFQT) and Syn 75W 110 (SVTQT) for my 2005 G56 3500 4X4.



This is the first change for the axles, transmission, and transfer case. Any tips or tricks in doing this job, or is it pretty much straight forward. I think I will weld in a drain bung into each of the axle covers so I can just drain it next time without removing the covers. I'll use a magnetic plug so I can see if there is any metal buildup on the next change. I did this on my 2001 and it work out great...

 

[TowPro]

Do you have a Dana rear, or Amercian Axle? If its Amercian Axle you might find 75W110 is the wrong weight oil. I used the recomended 75w90 in my AA axle.

75W110 was recomended for the Dana's if you tow a lot, but AA only recomends 75w90 from all that I have read.

Maybe someone else will chime in here.

you asked about tips.

rear: there was a nice gasket on rear cover, but I used a little blue gue to seal the old gasket "just in case"
My Trans needed a Allen Head Socket. I think it was 9/16" (its been a whole week, I forgot). I picked up a set of 3 sockets at Autozone for $8. 00, beleve me, its worth buying it if you don't have them.

In both the rear and trans that $11. 00 amsoil pump worked out nice.

With the trans, in 05 the first G56's that came out were having a bearing failure and the dealers were adding additional fluid to the trans. I know my 06 holds 6 quarts. 6 came out and 6 went back in. The level was just to the bottom of the fill hole.
Someone else should chime in about does the 05 need 6 quarts or more?

 

[Bodie]

Make sure you have a big metric allen head for the G56... ... not a SAE fixed with a grinder like mine. :-laf

 

[roperteacher]

I actully read on www.carsondodge.com where Dodge has changed the recommendations for Rear diff fluid in these American axles!! They used to NOT call for a limited slip additive, but now require 5 ounces if differential chatter occures. The New MOPAR fluid come WITH the LS additive already in it, just Like AMSOIL product. They used to call for 75/90 only as well, but have suggested the use of 75/140 in severe applications and if you live where it is hot in the summers with road heat etc. AMSOIL came out with the 110 as a medium go between. It is heavier than the 75/90 if you tow, but as thick as the 140 so you keep most of your fuel economy. Hope that helps!!

 

[RJOL]

Do you have a Dana rear, or Amercian Axle? If its Amercian Axle you might find 75W110 is the wrong weight oil. I used the recommended 75w90 in my AA axle.



75W110 was recommended for the Dana's if you tow a lot, but AA only recommends 75w90 from all that I have read.

All the third gens (or at least for the last several years) come with the AA axle, not the Dana. Mine is AA.



I have directly contacted Amsoil technical support and they say that the 75W 110 is the best lube for occasional heavy towing. In fact, they say that for continuous heavy towing, the 75W 140 is still the best option...

 

[RJOL]

With the trans, in 05 the first G56's that came out were having a bearing failure and the dealers were adding additional fluid to the trans. I know my 06 holds 6 quarts. 6 came out and 6 went back in. The level was just to the bottom of the fill hole.

Someone else should chime in about does the 05 need 6 quarts or more?

My original order for a 2005 was one of those that got caught up in this hold. Nobody could explain why and Chrysler was of no help. I canceled my order and picked one up at Dave Smiths.



The original problem was with the factory line. They either under filled the G56 or didn't lube it properly when they assembled it. The Chrysler fix was to add more ATF before they released the trucks. There have not been any recall/notices to fill it above the fill hole, after this precautionary fix, that I'm aware of...

 

[RJOL]

... In both the rear and trans that $11. 00 amsoil pump worked out nice.

If this is the small hand pump, I've tried these and if the lube is thick enough they just don't work well. I fill up a gallon freezer bag, with a quart or so of lube, then cut off the botton corner and stick it into the fill hole. what doesn't drain in, I squeeze in at the very end. Works for me...

 

[roperteacher]

I agree with the 75/110 AMSOIL recommendation. I tow heavy only on the weekends. THis is advised for me as well.

 

[TowPro]

Make sure you have a big metric allen head for the G56... ... not a SAE fixed with a grinder like mine. :-laf

I guess that is why I had to take the file to my SAE allen head I bought



I figured since it only cost $8. 00 3 different wrenches, it was just poor QC.

 

[RJOL]

... there was a nice gasket on rear cover, but I used a little blue gue to seal the old gasket "just in case"

Is this a regular gasket, or an "O" ring?

 

[steved]

Is this a regular gasket, or an "O" ring?

They are a rubber-over-steel-core gasket... very nice and very reusable... nothing to peel, no need to really clean it for RTV... NICE!



steved

 

[RHestand]

Quick tip:

I've been able to pump gear oil with my cheap plastic pump by first heating it in a microwave for about 60 seconds.



Don't forget to unscrew the lid a couple turns first, ( exploding gear oil can be very messy) and be careful not to get it too hot to handle.



It works for me.



RHestand