Hello, all. I need to start out with a question I'm sure has been asked before. I"m considering trading my '01 Ram Reg. Cab shortbed for an '03 HEMI quad cab. Do all HEMIs want mid-grade gas or it that just my wife's 300C?

 

Welcome Mike, I'm from Tallahassee as well. I'm going to go ahead and move this post to the 3rd gen Ram section, to ensure you get your question answered.

 

Hey Mike welcome to the forum! All the Hemi engines are recommended to run at least 89 octane. There are people that will run 87 with no problem and there are those who will experience knocking while running 87. I myself run 91+ octane to support my superchips tuner. Before the tuner i always ran 89.

 

yeah i always use to run 89 and every once in a while (like every 3K miles, i would run a high grade) but now that i have low temp t-stat and a programmer, i always run premium which around here is 91 and some places have 93.......oh and welcome to the forum

 

Just curious.... I have an '03 1500 w/ 4.7 litre - The owner's manual says to use 87. I just put a half tank of 91 in it and it doesn't seem as weak as it did before. It actually seems to run a bit better, not much, but noticeable. I don't hear any knocking or pinging or anthing that alarms me.... Is this alright to do? Is it better or worse for the 4.7?

I've always gone by the book in these matters, but I'm just wondering if anyone has had an experience in this area...

 

Welcome Mike, when I had my Hemi I always ran 87 with superchip set to economy.

 

I've not seen any 91 around here. My wife's "C" gets a steady diet of 89, with an occasional half-tank of 93.

 

You can buy a programmer, such as a superchips, that has an economy mode that will allow you to safely use 87, and believe me, 87 with that tune will outperform stock with 89, and your tranny shifts will be tons better than stock. You'll also get added benefits from it.

 

Hi Mike,

My manual states 89 minium, but like Hammer said you can do lots with a tuner.

And welcome to da forums.

 

ooo boy am i supposed to use 89 ive been using the cheap stuff... no problems really but i want whats best for my truck...