I have read several opinions about which oil is best to use in the CTD.
It all seems to boil down to if it meets or exceeds the manufacturer's specs, then use it.
What bothers me, is some of the information I have read, talk about "oil foaming" issues and increased engine noise as a result of certain brands used.
I have read about Rotella T, Amsoil, Chevron Delo, etc, but all have issues: Ansoil may be the "best", but very expensive, etc.
What I am trying to accomplish is to find a motor oil that is easy to find, reasonably priced, meets or exceeds manufacturers specs and does not have issues.
Having said all this, I am sure there are many more motor oils out there, that are very good to use in the CTD.
One of them I have read about is Castrol GTX Diesel.
Does anyone have experience with this oil?
Thanks,
rwclar

 

I used it ONCE. Didn't see anything better or worse, so why change?
I also used AMSOIL once. Great but too darned expen$ive.
I'm back to Valvoline Premium Blue.
That's what Cummins puts in them from the factory.

 

Mobil Delvac 1300s is an excellent dino oil. Doesn't stink, and has a lower pour point than Delo or Rotella.

I have Castrol Tection oil in mine right now (it was on sale). It's a "smelly" oil, but not as rank as Rotella.

 

The big boys use Delo 400 or Rotella. Delo 400 is a good price at Costco.

 

I just got my first case of Schaeffers 15W-40 Moly Bond. It's not the synthetic stuff, but the 7000 synthetic was only a little over a dollar more per gallon, but I just stuck with the basic. Won't tell ya what it cost unless your just dying to know.

 

I like mobil delvac 15W-40 with a fleetgaurd filter. I know many guys who have ran Delvac in cats and cummins in their OTR trucks for 1 million -1.5 million miles without an inframe rebuild. Plus its cheaper than Rotella, doesnt have the smell and a lower pour point.... Then again I wouldnt think twice about running Super Tech from walmart...... To each his own..

 

Valvoline Premium Blue is what I use in my truck. Used rotella before for a while but i hated the stink it had when the oil was fresh. The Schaeffers oils that dodgeguy71 mention are good oils too. I would personally be using one of those right now but they aren't readily avalible to me.

 

For three years and 43k my 24v has been eating up Delo 400 and is clean as a whistle from what I can see. Plus, its a little under $50 at Sams for 6 gallons.

 

yep, you're right... $39.95 for a case (six gallons) I do believe... Only way to go...

 

I read somewhere that Cummins recommends Valvoline Blue, is that correct? I'm using Rotella now, and frankly I don't care about the smell. I like the fact that my motor doesn't throw out black smoke with Rotella.

 

Valvoline Premium Blue carries the "C"ummins logo on the bottle!

HTH

Tony

 

Valvoline Premium Blue since day 1.

 

In the winter time in sub-freezing weather when starting the 24V engine cold and before warming the engine up enough the valve rods will get bent from high rpms when using Premium Blue. I use Amsoil Series 3000 5W-30 Heavy-Duty Diesel Oil and do not experience any problems whatsoever. No matter how much it costs, I paid too much for my truck to take a chance on not having the best oil in the crankcase. It does not matter how hot the temperature or how heavy the load Amsoil protects the engine and oil pressure is high. It does not matter if it is -30C the engine cranks over with no resistance from too thick an oil. The Amsoil has low viscosity when it is cold.

 

Says who? Amsoil? I've never heard of this before. Besides, I wouldn't crank an engine cold and start revving the thing way up until its got a few minutes on it at least. I lived in MI previous to AL, and my truck started below freezing without the block heater probably hundreds of times on Premium Blue. No bent valve stems.

And, if this were true, what would happen with 6.0's when they crank in sub-freezing weather? If a Cummins on Premium Blue would bend valve stems, I guess the 6.0 would shatter.

- JyRO

 

Is a valve rod a new part in an engine? A new name for a pushrod? or a connecting rod.A totally rediculous statement.Cummins wouldnt put that oil in if,if it may cost them millions in warrantys from other applications than DOdge,and Dodge would have stopped buying them by now.


Nothing wrong with Amsoil,but Shaeffers,Shell,Chevron,Mobil etc.. also make fine oils as well.The Rotella syn and Mobil Delvac both pour well at low temps,as does the Shaeffers 9000 supreme.Ive tried them all,and all work excellent.They are all readily available too,Amsoil is not.