I use canola oil. It smells better.

Explain this one, 2005 Pete 379, with a c15 Cat engine, sticker on drivers side frame rail says "Factory filled with Chevron Delo"

Why? Cat has their own oil, and I have heard from tons of Cat people that it comes in the same shipment as thier Mobil oil.

Is that a Peterbilt "factory fill?"

BTW, I personally use Castrol's Tection oil, but thats my own truck, My dad treats the others to Delvac.

Yes - Peterbilt factory fills with Delo.

Cat has their own oil

Cat has it's own everything even down to the Bolts.

LOL yep Cat even has Boots and eyeglasses now too.

Thanks REv. I figured it was a Peterbilt alliance.

Sure do, its made by texaco

They also have their own anti-freeze (red color) thats made by Texaco also, just ask them at Cat and they will tell you who makes what.

surprised the anti-freeze isn't Yellow too :P

Only if you empty your pee jug into the cooling system.

I was waiting for that :P

My 1st truck, was 1996 Volvo, with CAT, factory filled with DELO.
The same is my 2005 KW with CAT.
I went thru Rotella, Delvac, and stopped at Delo... :roll: