Unleaded vs. Premium gas, does it make a differnce?

Back in the old days of muscle cars we'd advance timing and run premium fuel, it was felt.

Pulling a trailer, the best solution is to drive a formidable tow vehicle. Lol

On this subject, I think 87 octane is supposed to be 87 octane and 93 is supposed to be 93 octane, but I have noticed a difference in mileage between different stations with the same octane. Even taking wind in consideration there is a difference. That is my OPINION not supported by facts.

As said, you should run the lowest octane that allows your engine to run smoothly/optimally. And yes higher octanes will supply more energy tho probably not at a cost effective price.

wa8yxm wrote:
...and he's already too rich...

no such thing as 'too rich'.

jdc1 wrote:
I'm pretty sure the engineers that spent thousands of hours on that engine left you a book with your answers. Or, you can take the advice of some guy that read something on the internet.

lol

Towing with pure premium, has made a slight performance difference, on my last two trucks. Mileage really drops with low grade ethanol fuel. I will always opt for best choice, over cost.

I remember one local gas station getting caught, fined, exposed, for selling 85 octane gas, when pump was labeled 87. I don't know if that is checked on occasion, or if it requires a complaint.

Jerry

I'm pretty sure the engineers that spent thousands of hours on that engine left you a book with your answers. Or, you can take the advice of some guy that read something on the internet.

Actually, high octane gas has less BTUs per gallon than 87 octane. Its claim to fame is that the engine computer won't ****** the timing and you'll get better performance under load. Whether it's enough of a mileage gain to offset the additional cost is for you to decide.

I am into muscle cars and as mentioned above, higher octane is for one thing: to prevent pre-ignition (pinging) by burning slower and cooler. Lower octane gas burns faster and hotter. I use to think that higher octane made more power, but not now.
JK

wa8yxm wrote:

You can pay more for "high-Test" but all you are doing is making Mr. Koch (The Oil Robber Baron who owns several refineries) Richer and he's already too rich.

I would think it also helps millions of stock holders, folks with annuities, and IRAs etc.
bumpy