What brand oil do you use?
I have a 2007 5.9L Dodge diesel. Up until now I have always taken it to the dealer to have it serviced. It has been my impression that the Dodge dealer uses Valvoline oil for oil changes on diesel's(I...
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Cummins12V98 wrote:brooks379 wrote:
Rotella T-6 full syn.
I used Rotella T 15/40 for years until 2 years ago. I was in Wyoming and it fell to -10 with no place to plug the truck in, when I started the 7.3 the next morning it spit and sputtered, rocked, smoked until the oil thinned out then it smoothed out. I switched to T-6 SYN. and this last winter when I started it below -0 it purred like a kitten.....Sold on T-6 full syn. !
Nothing better than a FULL synthetic for severe cold weather.
My F-350 fired right up at -9 with regular Super Tech 15W-40!
