What weight oil should i use in my diesel tractor, i live in florida where it's hot! 15w-40,30wt,or 10w-40?

I am thinking of using rotella t 15w-40?What weight oil should i use in my diesel tractor, i live in florida where it's hot! 15w-40,30wt,or 10w-40?
Good starting point 15w40.





Theoretically it offers cold startup protection (15w)


as well protection at the higher operating temps (40w).





Regardless of the diesel engine's application,


I usually use Rotella T or Chevron Delo 400 15w-40 during engine break in


then switching to Royal Purple 15w40 synthetic motor oil.


.What weight oil should i use in my diesel tractor, i live in florida where it's hot! 15w-40,30wt,or 10w-40?
I live in Florida as well...I use a 10w40 for all my machinery during the summer time, and when it does get colder(i live in the panhandle)...I switch back to 10w30
id say you would want to use the 15 weight that will work pretty good in your tractor! i have a tractor in texas and use rotella 15w-40 best of luck
15w40 rotella
Are you going to trust your motor to the people on here? Wow. How about checking with the manufacturer and doing it right? It's your motor.
I'm in Florida too. Rotella 15W-40 should be fine. If you want to go synthetic check out Amsoil 15W-40: http://www.amsoil.com/lit/g118.pdf





My Amsoil website: http://www.number1synthetic.com


Good luck!