Straight 30W or 40W Rotella

[Big White Beast]

I was at Napa today and saw some Rotella in straight 30W or 40W. For those of you from warmer climates is it OK to run this in our trucks? I always ran striaght weights in my car out here as it rarely gets very cold.



Don't know much about oils was curious.



Garrett

 

[HC]

I remember some older posts that talked about running straight weights in stationary engines and/or locomotive or marine engines. In other words, in engines that generally start up and then run until time for their next maintenance. For that application, the straight weight might be the best. You could probably use it in our application, too, but I believe the best protection for the engine would come from using multi-weight just like the owner's manual recommends. The multi-weight is going to pump sooner and start protecting faster, and we all know that start-up is when a lot of our engine wear occurs.

 

[Motorhead]

Straight weights

Your truck is too new to even think of straight 40wt. Now if you were tooling around the Sahara desert... . Maybe. Even at 50 degrees all night, 30 or 40 wt is thick. This puts extra loads on your oil pump and slows the time that components farther away get lubrication. I say get some Rotella 15/40, run it year round. Delo 400 15/40 is very inexpensive at Costco. You get two oil changes per case. The only things I run straight grades in are old VW's,Triumph motorcycles and Briggs and Strattons (maybe a Powerstroke. . to slow the consumption problem ). MY $. 02 Chris

 

[Gray 5.9]

Maybe even Kendall 70 wt for the power strokes, my friend has trouble with his oil pressure at only 66,000 mile and the power is sucky!!