Is anyone running schaeffer oil in a 6.7l engine. I searched the post and found nothing about 6.7. Thinking about switching to supreme 9000 5w-40.
Any comments welcome.

 

I have been running it in my 05 5.9 for the last 2 years. I will be putting it in my 6.7 when I get some more miles on it. I have 600 on it right now and have not even pulled heavy with it yet. I have had good luck with it in my 05.

 

Does it meet warranty requirements?

 

Just make sure the oil it rated as CJ-4 low ash and not CI-4+ that the older 5.9L use.

 

The 7000 shows having the CJ spec for the new emission diesels. But the 9000 doesn't.

MikeyB

 

I hope the 9000 stays CI-4 instead of being watered down. Maybe they will make 2 versions to meet needs. I use it in everything on my farm that has an engine...