Mileage between 6.4 oil changes

[6.4PSD]

Wondering how many miles is normal to geo between oil changes. And what's the best oil to run? Money not an issue and no dpf or doc

Thanks

[leftea]

i change mine at 5k motorcraft oil and filter. with dpf

[theplumbingmedic]

I do the exact same thing... cat / dpf delete

[6.4PSD]

ok thanks guys!

[08F250TX]

Any CJ-4 oil should be fine. I'd recommend sticking with a Motorcraft filter.

[H0USE]

i used to do 4 to 5k when I had the dpf, now without the DPF I think the ford recommended 10k should be fine, any comments?

[Galaxie]

I would run a bit beyond the 5/6 K people seem to go, get a blackstone report and see if you can extened it. WIthout DPF, I would try for 7k, do a blackstone and see where the sample is telling you to run to.

[08F250TX]

Originally Posted by H0USE

i used to do 4 to 5k when I had the dpf, now without the DPF I think the ford recommended 10k should be fine, any comments?

The Blackstone report is really the only way to know for sure. Start at a 7K change and see what the results are. They will tell you if you could get more miles or not.

It depends on your driving habits also, if you're in stop and go traffic a lot or idle it a lot you probably shouldn't push it.

[sportsfreaked]

What they said. I did my first at 5000 miles and sent a sample to Blackstone and paid the extra money to see how good it was still. They said I could go 7,000 and send another sample so that is what I am going to do. I am all stock and I do not tow much at all right now. Like stated in previous post the $35.00 to have Blackstone check it out is worth the money IMO.

[Tsgs69400]

Simply for safety i run both my trucks at 5k intervals. i dont have a dpf anymore but with the 6.4 being the close cousin that is is to the 6.0 which was a killer on oil i just do it for peace of mind.
As far as the oil goes.. not all cj-4 oils are the same. The best hands down imho is the valvoline premium blue. I wont touch regular rotella anymore. Once i get closer to 100k on the motor ill run full synthetic valvoline. But in the winter i am seeing great results with the 10w40 rotella T5 semi-synthetic.

This YOU NEED TO READ!!!
http://www.turbodieselregister.com/TDR57_Oil.pdf