What oils?

[Snoxracer]

I am going to be placing an order for synthetic oil, and was wondering what the transfer case uses. I know people recommend 75w-90 for the Diffs, syn ATF for the trans, but not sure what my truck takes in the transfer case?



Thanks

Snoxracer

 

[Bob4x4]

I would use AMSOIL product# FGR01 75W-90 Synthetic Long Life Gear Lube. Hope this helps.

No way grass hopper... ... ... ... . the transfer case uses atf



Bob

 

[TheBigSgt]

I would use AMSOIL product# FGR01 75W-90 Synthetic Long Life Gear Lube. Hope this helps.

May want to check that out on YOUR website! It says auto trans fluid! Don't worry, it gets confusing some times. :--)

 

[LambertM]

Ditto on that... service manual recommends 2 qts of ATF +4, but based on my experience which is consistant from other members, you will need 2. 5 qts. I further recommend Amsoil Severe Gear 75W-90 in front/rear diffs. You will need 7 qts to cover both with a little remaining. Refer to TSB for fluid level recommendations. Good luck !

 

[amsoilman]

I am going to be placing an order for synthetic oil, and was wondering what the transfer case uses. I know people recommend 75w-90 for the Diffs, syn ATF for the trans, but not sure what my truck takes in the transfer case?



Thanks

Snoxracer

ATF+4 should be used in your X-fer case.





Wayne

amsoilman

 

[Snoxracer]

10-4



Thanks for your help guys!



Snoxracer

 

[RobertP]

you can also use the amsoil 5w-30 syncromesh, it's what we reccomend for the t-case. it has better HD performance under big HP.

 

[fj40dave]

you can also use the amsoil 5w-30 syncromesh, it's what we reccomend for the t-case. it has better HD performance under big HP.

I'm researching which fluid to use in my NV271, and see that ATF is recomended.



You suggest the AMSOIL 5-30 syncromesh which (if I'm reading this right) is a "manual syncromesh transmission fluid".

Is it ok to use the manual fluid in the NV271 although the ATF is called for..... or..... I guess what I'm asking is: When the manufacturer calls for the ATF and you recomend the manual, what makes the manual fluid a better choice.

I'm wanting to change/add the best stuff I can.



How about the NV5600 transmission..... recomendation there?



Ok... . diff's too What do you suggest for the AAM 9 1/4 front and 11 1/2 rear with limited slip?



Dave

 

[Duluth Diesel]

How about the NV5600 transmission..... recomendation there?



Ok... . diff's too What do you suggest for the AAM 9 1/4 front and 11 1/2 rear with limited slip?



Dave

.



Going with AMSOIL, I recommend:

NV 5600 MTF 5W-30 Synchromesh gear lube.

Front and rear diffs: SVG 75W90



PM me if I can be of more assistance.



-Chuck

 

[1965LONEWOLF]

amsoil atf , works great

 

[steved]

I'm researching which fluid to use in my NV271, and see that ATF is recomended.



You suggest the AMSOIL 5-30 syncromesh which (if I'm reading this right) is a "manual syncromesh transmission fluid".

Is it ok to use the manual fluid in the NV271 although the ATF is called for..... or..... I guess what I'm asking is: When the manufacturer calls for the ATF and you recomend the manual, what makes the manual fluid a better choice.

I'm wanting to change/add the best stuff I can.



How about the NV5600 transmission..... recomendation there?



Ok... . diff's too What do you suggest for the AAM 9 1/4 front and 11 1/2 rear with limited slip?



Dave

I use Royal Purple Synchromesh (the Amsoil MTF 5w30 oil equivalent) in my trnasfercase with good results... my transmission hated it, but my transfercase likes it. I also run RP 85w140 MaxGear in the rear of my truck, 75w90 Mobile in the front...



I run 5w30 Amsoil MTF in my NV5600 with good results and will most likely switch over to that when the time comes to flush the tcase again.



steved

 

[fj40dave]

Oo. I completed the oil change of the differentials and the transmission & transfer case. Oo.



Used Amsoil Manual Transmission Fluid 5w-30 in both the trans & transfer.

Used Severe Gear 75w-90 in the diff's.



I also put a Mag-Hytec diff cover on the rear AAM 11. 5 diff.



Thanks everyone for the information here..... it helped a lot!

 

[Diesel Thunder]

On the transfer case, do ya'll fill it until it runs out of the fill hole with ATF+4?

 

[steved]

On the transfer case, do ya'll fill it until it runs out of the fill hole with ATF+4?

Yep, fill it even with the fill hole.



steved

 

[Snoxracer]

How much fluid will the diffs hold now with Mag-hytec covers installed? Both front and rear? I hope that 12 quarts is enough because that is all I ordered. I ended up going with 75-110 amsoil severe gear, I thought that it would be a happy medium over 75-90 or 75-140. Anyway thanks again!





Snoxracer

 

[Duluth Diesel]

Good choice on fluids with the 75W110. 12 will be more than enough, but if you could post how many it took with those diff covers!



-Chuck

 

[amsoilman]

How much fluid will the diffs hold now with Mag-hytec covers installed? Both front and rear? I hope that 12 quarts is enough because that is all I ordered. I ended up going with 75-110 amsoil severe gear, I thought that it would be a happy medium over 75-90 or 75-140. Anyway thanks again!





Snoxracer

You're going to need about 13-14 Qts. since yours is a 3500.



Wayne

 

[fj40dave]

How much fluid will the diffs hold now with Mag-hytec covers installed? Both front and rear? I hope that 12 quarts is enough because that is all I ordered. I ended up going with 75-110 amsoil severe gear, I thought that it would be a happy medium over 75-90 or 75-140. Anyway thanks again!





Snoxracer

I didn't install a front Mag-Hytec cover on the front, so I only needed the 4. 75 pints of 75w-90 there.



The instructions with the Mag-Hytec rear cover state:



"13. Remove the dipstick assembly and add in the new gear lube. Your new cover will take approximately 6 qt's to fill to bottom of axle tube (lower line on dipstick) and 7. 5 - 8 qt's. to bottom of axle (top line on dipstick). "







When I was through adding the oil to the rear diff - I checked and found I was about 1/2 qt over full - and drained it to the top mark on the dipstick.





So... ... about 7. 5 qt's in the rear for me and 2. 5 qt's in the (stock) front.



These are the AAM axle's:

9 1/4 front

11 1/2 rear



(info on what axles you have is on the sticker inside your glove box)

 

[Snoxracer]

Well 12 quarts is just enough to fill both diffs with the mag-hytec covers. I ended up with 7. 5 quarts in the rear (put the level right about to the top line). And then put in 4 quarts in the front diff with the mag cover. So now I have a half quart to spare!

The best part of all of this was my Amsoil man delivered it to my door! (Thanks Heath)



Snoxracer

 

[Bow66tie]

fj40dave, would you mind letting me know where you purchased your Amsoil lube. I'm finally getting ready to install my gifts from Santa!



Thanks in advance.



Michael