Shell Synthetic 15/40 Rotella oil now available!

[HerbW]

Has anyone seen or used Rotella 15/40 oil in the Ecodiesel? New to me. I saw it in Walmart and was buying three gallons before I realized it’s 15/40.
I think I’d be great in our trucks and protecting bearings. I live in a warmer area so winter isn’t a concern.
Any thoughts?

 

[JJJ]

I would stick with manufacturers recommendation.

 

[AHutson]

I would also stay with recommended rating from the manufacturer. These new engines have really tight tolerances, heavier oil might cause a ticking time bomb issue.

 

[ARedmon]

I would also stay with recommended rating from the manufacturer. These new engines have really tight tolerances, heavier oil might cause a ticking time bomb issue.

When I traded my 2005 RAM diesel for my current 2014, I read that the factory fill had changed to 5-40 synthetic. I had always used 15-40 conventional in the 2005. I contacted RAM to ask why they changed and if I could still use the 15-40 conventional in my 2014. They told me that the recommendation had not changed: 15-40 conventional or 5-40 synthetic, depending on the temps in my area. The factory fill changed because they were selling a lot of diesel RAMs to folks in the north that really needed to use synthetic. He said that in my area (TN), I shouldn't be concerned about whether or not to used synthetic.

 

[JJJ]

When I traded my 2005 RAM diesel for my current 2014, I read that the factory fill had changed to 5-40 synthetic. I had always used 15-40 conventional in the 2005. I contacted RAM to ask why they changed and if I could still use the 15-40 conventional in my 2014. They told me that the recommendation had not changed: 15-40 conventional or 5-40 synthetic, depending on the temps in my area. The factory fill changed because they were selling a lot of diesel RAMs to folks in the north that really needed to use synthetic. He said that in my area (TN), I shouldn't be concerned about whether or not to used synthetic.

If your 2014 is an ecodiesel, your deater is incorrect.

 

[John Jensen]

Conventional oil has never been factory acceptable for the Ecodiesel.
The first Ecodiesel (2014) factory oil requirement was synthetic 5w-30. In 2016 it was changed to 5w-40 and recommended Rotella T6. It has been presumed that the change was to help preclude bearing failures. IMO one should stay with synthetic 5w-40, especially if still under warranty. I use Rotella T6, 5w-40.

 

[John Jensen]

Conventional oil has never been factory acceptable for the Ecodiesel.
The first Ecodiesel (2014) factory oil requirement was synthetic 5w-30. In 2016 it was changed to 5w-40 and recommended Rotella T6. It has been presumed that the change was to help preclude bearing failures. IMO one should stay with synthetic 5w-40, especially if still under warranty. I use Rotella T6, 5w-40.

 

[ARedmon]

Sorry! I had missed the fact that the question was about an EcoDiesel! My truck is a 3500 Cummins.

 

[ARedmon]

Sorry! I missed the fact that the question was about an EcoDiesel! My truck is a 3500 Cummins and conventional 15w40 is still acceptable in most temps. With the EcoDiesel, I would stick with the synthetic 5w40.