Who supplies oil for Cummins?
 

I have heard that Valvoline supplies cummins with there oil and that it is the factory oil from cummins. Is these true? If so im going to end my quest on finding out who has the best oil for my truck and just use Valvoline!

Yep. Dodge and Cummins ship with Valvoline.

I am a fan of valvoline thats good to know :tu:

Yes they do( valvoline premium blue), but our local dealer here in boise, id- quit using them. now we supply them with mobil delvac 1300 15-40, about 90 cases a month. That is just local to me i'm not saying every where.

Why did they stop using the Valvoline???

Here is the link to the Valvoline Blue that is endorsed and recommended by Cummins Engines. Valvoline.com > Products > OEM Endorsed Products > > Valvoline Premium Blue® Engine Oil

Or you can also move up to the extreme duty and the warranty is covered up to 5000 mile oil change intervals. Valvoline.com > Products > OEM Endorsed Products > > Valvoline Premium Blue® Extreme Engine Oil

I been usin the standard duty for a few years myself and have no complaints.

i use mobil oil in everything since i learned that you dont change your oil because of viscosity brake down , you change it simply because its dirty and to me mobil oil looks the cleanest coming out of the bottle . so thats my unprofessional opinion on the matter of oil , why spend the $$ on synthetics its not going to get dirty any slower. A better filtration system like a remote oil filter is where $ should be invested.

i use delo15 40 but i agree with chad a better filtration system would be better

Diesel minded, you are absolutely correct! :tu: The other main job of oil besides lubrication, and cooling is to remove soot, and junk in your motor. In a class, i learned when you put new oil into a soot laiden engine, the "new" oil is automatically degraded. This is especeially true when it comes to dino oil ( delo, shell, ect) the semi blends and the full syn oils help a bunch in maintaing viscosity and thermal break down and trap and remove the soot, ect. For an oil company to suggest that you wait for up to 25k between changes is wrong. that is telling me they are trying to justify the price they are charging you. In my motor, i used the kendall (which is now owned by conoco phillips) 15-40 syn blend for 3 years and was able to read the dipsitck through it until 5k when i'd change it. I have now gone to mobil delvac 1 5-40 full syn and it is even more clean. Tells me my filter and oil is doing its job. My buddy who is using amsoil ( not calling them out but as an example) even at 1k on the change, his oil is blacker than black soot laiden and dirty. but bieng a full syn, it still has some viscosity in it. not impressive to me. If a guy was to put on a say for instance a FS2000 soot filter system, the oil would appear brand new on the dipstick. But Mobil told me at a seminar, that if you use a filter such as a "gold" from NAPA that is a good enough filter, the oil will do the rest. True so far in my engine. Clear on the dipstick till 5k when i change it. :rocking:

Thanks for the info guys!! Yea we use NAPA filters on all our trucks. We know one of the guys that work there real well and he told us that Wicks filters supplies NAPA there filters and Valvoline bottles the NAPA oil.