Changing fluids in new(to me) F-350?

[Coadman]

Just purchased a 2002 F-350 4x4, automatic, dually with 206,000 miles. Rain tonight may let me do some service work on truck tomorrow. I would like to change the fluid in the rear end, possibly transmission, transfer case etc. Would you guys go with synthetic oils in these, and if so, any particular brand? do you know the capacities?
thanks,
Jim

[BigBlueDually]

Congrats on the new truck!

I haven't done my tranny and transfercase yet, but I have done my rearend. It takes 4 bottles of synthetic diff fluid. I use 75w-140 in it and it works fine. Make sure it is for limited slip as well. I would get a bottle of friction modifier to have on hand IF you need it.

[Coadman]

Anybody else have any suggestions?
thanks,
Jim

[campbellflage]

yeah if it hasnt been changed before, its probably a liquid gasket, make sure you got a good scraping tool to get it all removed, and maybe a bottle of brake cleaner to clean the cover while its off. I used a plactic bag pushed inside and around the rearend so while cleaning it nothing could fall in there. Common sense stuff you probably already knew but...

[cstem@comcast.net]

Originally Posted by Coadman

Just purchased a 2002 F-350 4x4, automatic, dually with 206,000 miles. Rain tonight may let me do some service work on truck tomorrow. I would like to change the fluid in the rear end, possibly transmission, transfer case etc. Would you guys go with synthetic oils in these, and if so, any particular brand? do you know the capacities?
thanks,
Jim

I just changed my rear,transfer case,and engine over to Amsoil.I have to do the tranny and front end . Gom on to Amsoil's web site, put in your vehicle info and it will give you the capacities of every thing.Even if you do not use there products at least you have the info you need.

[Flapdisk]

bigbluedually, what is friction modifier for? Do you add this to the 4 bottles of synthetic fluid?? I want to do my tranny, transfer case, front and rearend also... I just got an 02 srw 4 door 4x4 also.. with 176k

[campbellflage]

yeah you can get it at ford, got something to do with the limited slip rear end. one bottle per fill on the rear

[Mikey's250]

If you get royal purple and Im sure other brands but it already has the friction modifier in it. I just did my rear end and it cost me almost a $100 for the fluid and some rtv

[08pwrstrokr6.4]

royal purp is what i would use.its expensive but man ive heard nothing but good things.i used it in my tacoma and loved it.ill be using it in everything in my diesel.

[clkelley777]

Just to add to the post above, anyone looking into Amsoil fluids can look up recommended fluids and capacities at the link below for any vehicle.

Auto & Light Truck Look Up Guide