06er

I just wanted some other opinions about switching from rotella t to a synthetic oil. My 01 has 107000 miles on it and always had rotella t in it what do you think about switching it to a full synthetic motor oil is that a bad idea, or what do you guys think. If i do switch iam gonna use schaffers 9000 5w/40 full synthetic. ?

blackdiesel

Dad and I switched both of our truck with around that many miles on them, with no problems at all. We only switched to go longer between changes. That's the only way to come out on syn. oil. JMO

Thundercraft

That cummins is just barely broke in. Excellent time to switch.

06er

Iam gonna switch today thanks

06er

Just got done so far so good man did that quiet the motor down alot.

triker888

In some engines, synthetic will find leaks where none existed before. Not always.

06er

Yeah thats what i was kinda worried about . I will let you guys know how everything turns out in a 1000miles or so.

Thundercraft

I'd say that my experience was the opposite.... less oil leaking. My engine is quite clean - just one little drip that I haven't been able to pinpoint....
Oil consumption dropped too.