Just wondering what everyone is using. Regular, Mid or Premium?
Premium 93 only. Period. Zero Exceptions. And only Shell gas at that.
On the 6-speed, 91 Premium is recommended. Also, I recall reading several articles, that today's computers and diagnostics in cars make adjustments based on fuel used. This was the case with my G35. Lower octane, computer retards the timing, and higher octane, adjusts accordingly with increase in performance accordingly.Ugg!! Could you support a company that does not buy crude from countries that would do us harm?
PM me and I'll send you a list.
I agree, 93 is not necessary unless tuned for it. 89 should be fine - even with the ethanol blend.
Just check your owners manual and go with it unless you have really modified your ride.. Cheers....
....you're right. It's 91+ for the manual and 87-89 for the auto. Dodge states that there is no benefit of running anything more than 89 in the auto.EDIT: I'm going to run down to my car here in a bit, and look again in my owner's manual...before people pounce, but I am sure I read somewhere it required Premium...
....again, (for clarification) the manual states 91 for the 6 speed and 87-89 for the auto.I have the 2010 R/T 6 speed and manual says 91 octane. I hope no one is skimping on the proper octane for their Challenger. You may pay 10 cents more a gallon so a full tank thats only $1.90 more so please dont skimp.
....the auto 5.7 is also 10.5:1 from my understanding.Many believe 91 is "better" than 87 or 89. It's not true; they merely serve different purposes. Ninety-one octane has a higher percentage of eight-chain molecules, which are more resistant to detonation from compression; as such, 91 should be used for higher-compression engines, like the R/T manual's 10.5-1 compression engine.
Correct. I believe the manual says something like 87 will work, but 89 is recommended for the RT auto. Not sure of the exact verbiage.....again, (for clarification) the manual states 91 for the 6 speed and 87-89 for the auto.
IIRC, it says 91 is "preferred" in the 6 speed (although you can run a lower octane if needed) and that anything more than 89 is a waste in the auto.Correct. I believe the manual says something like 87 will work, but 89 is recommended for the RT auto. Not sure of the exact verbiage.
Been running 87 in mine (automatic) since I bought it in February. Ran a tank of 91 through it one time just to see if there was a big difference. Didn't really notice any.