oil
 

bought my 03 2500hd about 6months ago doin the first oil change what are you guys runnin. is there a 10w-40 synth blend old onwer has it writen in book?

I'm sure there is, actually there has to be because i've seen em before, personally i'd go with a fully synthetic being as a rotella t 5-40 synthetic is only $18 a gallon at Wal-mart it's cheap enough IMO to run in any truck

i run the rotella syn, u can find it at wallmart

Rotella for sure
:U:

Depends you can go 10K on dino oil no real need for syn unless you want to go past that unless you just want syn. Delo, Rotella, and Delvac are good dinos.

I run Amsoil 15W-40 and an EAO filter. Change every 15k miles.

i ran delo 400 and changed evry 3k before my rebuild now im going to run valvaline true blue full synthetic 15w 40 endorsed by cummins with dual oil filters hoping i can now go over 10k without changing the oil

I use ROTELA 15-40 every 5,000 miles, I'm thinking of using ROTELA SYN 5-40 every 10,000 miles ???

Running Delvac 1 5w-40. Though it's $8 something a quart, can run 10k before an oil change. :U:

I use Amsoil in everything...


Best there is period!!!

As far as caving money, Amsoil has the others beat as well, get with Heath here on the site and let him show you what they can do for you...

God Bless

Chris

Actually you can get closer to 25K on between changes with that oil and filter. Same thing I've run in my 3 trucks and my oil analysis shows oil still good at 22K. I change mine every 25K. If you install the by-pass system you can get 60K between changes with the same oil.

I'm running Rotella T 5w-40 synthetic also and have been using it since my 1st oil change.

I do the amsoil:w2:
The mileage DD mentions is doable. I have also heard evidence of.