I've searched the forums but havent cfound the answer Im looking for.

What does the manual say about OCI?

Thanks,

Jake

 

Same as the rest.
Every 3000 miles using dino.
Up to 10,000 miles using a good synthetic oil. Mobil 1, Redline, etc.

 

............thanks

 

hey kwik were did you get the information on 10,000/synthetic, i checked navistar, and all the said was was 10,000 for th t444e, and nothing about synthetic, i change mine every 5k, point me in the right direction please

 

Lot's of people go a lot farther than that using Blackstone reports as a basis for deciding when to change. The 10k mark is my personal limit on Mobil1 Delvac 5-40. I'm sure it could go farther, but I would rather change it out than rely on Blackstone.
Personally I change my oil every 5k using the Delvac as well. I would only go 10k if I was on vacation and putting a LOT of miles all at once on the rig.