tune up

[z28gsxr]

I have an 02 F250 4x4 7.3L. I have had it a few months and already did one oil change and figured its due for the next.

I live in Southern CA so coldstarts really aren't an issue. What oil thickness would be recommended?

I did a search and as far as the trans goes it is recommended to use Devron III/Mercon but how many quarts do I need?

I am also looking at swapping the fluid in both differentials. What type of oil do I use for this?

Recently I've been towing a dual axle 8x16 with 4 street bikes and tons of gear and random crap. I just want to make sure that I can continue towing it without an issue. I pretty much take the trailer out once or twice a month on a 3-7 hr drive to various race tracks

[PolarBear]

The auto trans holds 17.7 quarts including the torque converter. The front axle takes a 75W-90 and the rear takes 75W-140. I'm running Royal Purple in the diffs on 1 truck and Amsoil in the other truck. The transfer case is also very easy to change the oil in and it takes ATF also.

[z28gsxr]

Thanx for the info. I also found a how too for changing the fluids in everything but the trans on this site.

Welcome to guzzle's Ford PSD Web Pages

Also do you know if the f350 differentials are the same as the f250? On the site i linked they are doing the work on an f350.