High Octane Gas?
I have a 2014 2500 HD Ram with the 5.7 Hemi.. and have been putting reg gas in it. With the camping season upon us and towing every other weekend, should I be putting a higher octane in it? Will this ...
Forum Discussion
philh wrote:
{sigh}
Higher octane fuel has LESS Btu's of energy per gallon. What it does have is a better controlled burn rate under higher pressures.
Run the mfg recommended fuel.
I run premium in my 5.7L only because my engine has been retuned to use the higher octane fuel.
Another issue with premium, today's "gasoline" deteriorates over time. If you get a station that doesn't sell enough premium fuel, the quality can actually be lower than regular or mid grade. Many stations blend regular and premium to get to mid grade... but not all. Finally, you can run into stations falsely selling regular as premium. I can tell within a mile of leaving a station if I truly pumped good quality premium. Because my engine is after market tuned for it, spark advance gets pulled very quickly with lower grade fuel.
Did I mention, run the mfg recommended fuel?
Oh please cite where higher octane gasoline has less BTUs .......and I don't mean something trivial like 200 BTUs out of ~115,000 per gallon avg.
