this may be a dumb question, but .... does the 4.7 get better gas mileage than the 5.9 ?

Also, do you have to put premium gas in the 5.9, especially the one in the 02 and 03 R/T's ?

 

Yes.

No.

 

Welcome to the forum Keenerken. This issue has been talked to death. Here is the link to answer your questions.

MPG's : https://dodgeforum.com/forum/1st-gen...s-mileage.html

Octane: https://dodgeforum.com/forum/1st-gen...ngo-r-t-3.html

I added these two threads to the DIY message thread. The DIY thread will always be updated.

As always, please check our DYI thread stickied on top of the 1st gen durango forum to find answers to alot of common questions. You may continue the message responses in those threads.

 

thanks !