Home   Forums   Gallery   Vendors   Advertising   Links
Go Back   DieselRam.com > Diesel Ram Technical Topics > Technical Info: 3rd Generation: DRIVETRAIN
Technical Info: 3rd Generation: DRIVETRAIN Technical discussion of third generation (2003 - 2007) engine and drivetrain questions, solutions and upgrades.
Thread Tools Search this Thread
Old 09-10-2018
honda350rmx's Avatar
honda350rmx honda350rmx is offline
Join Date: Feb 2014
Location: Westminster CO
Posts: 59
Default Diff oil change

so my 2003 just turned 180k. had the 555 engine 6 speed 4X4. i had my diff fluids changed at 75k miles and am wanting to do it agin. this time I want to change it my self. looking over the web there it 75w-90 all the way to 70W-140. i pull a few times a month. and a few times is it at the max of the truck weight. i am thinking about using valvoline full syn 75W90 in both the diffs. just because i can get it thought my work at about $5 a qt. any thoughts on doing this. thanks Nick PS will be changing the trans and t-case at the same time.
2003 2500HD mbrp 4" exhaust, +50 injectors afe stage 2, kore 2" kit, air bags. Gauge set
Reply With Quote
Old 09-12-2018
ccmckee's Avatar
ccmckee ccmckee is offline
Join Date: Mar 2005
Location: Irricana, AB
Posts: 8,122

I have the same truck, i changed all of my fluids to Amsoil. I change my driveline fluids every other year and i run 75w-110 in my diffs, i don't tow a lot and usually only run about 15,000 km per year with the truck now, it has 380,000km on it. You will need a big ass allen wrench for the tranny plug fyi, 11mm if i remember correctly.
2003 QC HO 6SPD, 305/555, 4WD, TST Controller W/monitor, fuel pressure guage, 100% Amsoil

'96 2500SLT CC LB 2WD, KDP tabbed,100Hp Maxsticks,16* ,3k gsk,afc modded,#8 tst plate,62/70/13 turbo,4" MBRP exhaust,AFE stage III dry filter intake,autometer boost pyro, oil, tran temp,DSS,rebuilt diff & tranny w/billet triple lock TC w/lockup switch,1tn rear cylinders,ride rites on all 4 corners w/on board air,465k km. 330 hp 766 ft/lbs
Reply With Quote

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

All times are GMT -6. The time now is 02:50 AM.

Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
Copyright 2016 www.dieselram.com. All material found on this site is property of DieselRam.com.Ad Management plugin by RedTyger