what oil and oil filter to use in my 03 lb7

duramax34

New member
May 30, 2011
36
0
0
35
Maine
Changing my oil in my 2003 lb7 D-max with 125,000 miles for my first time ive only had the truck for a month thoe lol. Just wondering what the best oil and oil filter to run in these moter and i figured you guys would no so please help thanks. P.S ive allways ran mobile 1 oil in all my truck and a mobile 1 filter and i allways thought that was the best.



:witch: edit

I deleted some unnecessary links. While we have no problem with with links to other forums if some tech info is involved. I didn't quite see the reason for yours and removed them.
 
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PhilsLB7

Way Better Than Facebook
Jun 29, 2009
810
0
0
Tennessee
Mobile 1 is good oil and oil filter. Right now I am running Shell Rotella 15W-40 and a WIX filter. I was previously running Amsoil 15W-40 but had to change oil and couldn't get the Amsoil in time so I had to switch for now. As long as you are running a good quality oil, oil filter, and keep up with your oil changes, you should be fine. Good luck and have fun with the "new" truck.
 

DAVe3283

Heavy & Slow
Sep 3, 2009
3,727
296
83
Boise, ID, USA
Delo 400 and an ACDelco (factory) filter. I was changing it every 5k, but after some oil analysis, I now change it when the computer says to (about 10k).

You can get the ACDelco filters at most auto parts stores now, which saves a ton over the dealership.
 

duramax34

New member
May 30, 2011
36
0
0
35
Maine
Is it bad to run a fully sinthetic oil in these trucks past 100,000 miles if they have never had sinthetic before? Like to switch over to sin past 100k?
 

motoking_1990

Active member
May 9, 2011
1,957
5
38
Terre Haute, IN
I use shell rotella and a wix oil filter just changed mine friday to see if i have any injectors leaking and it is having a ticking noise that i gotta get figured out also!! :(