Thread: Rotella T6 5w-40 in the summer?

I know the FSM says to basically *never* use 5w-30 oil in the DET unless extreme cold conditions. I've never used 5w-30, but I am thinking of running the T6 5w-40 and was wondering what your thoughts are on using that weight in the summer? Is it too thin for the DET?

I'm thinking since it's formulated for turbo diesels that are running really hard/hot that it should be OK. I've read a lot of good things about it.

-G

I always use 5w-40 in my DET

Mobil 1 Turbo Diesel

^ I use it in my spec miata too (not even turbo,. lol)

After I read this: Diesel Engine Oil | Mobil 1 Turbo Diesel Truck
Im glad i chose it. Especially since I dont have a catalytic converter.

rotella 5w/40 synthetic

..don't need no stinkin' catalylitic converter.. haha

Any car we have 1995 and older doesn't have one anyway (no emissions testing for obd1 in Illinois)

i run rotella as well in my s13 and ran it on my old evo running e85

sounds like good things going on w/T6..I'll try it out!

I run 0-40 rotella in winter and 5-40 rotella in summer on my GTiR.

Yep it's good stuff. Using Rotella 5w-40 here in hot ass Phoenix, awesome for track duty.