What do you think? Is premium a ploy designed to add to Big Oil coffers? Or, do you think it’s a “must” for all high-compression engines, no matter what we said? Want to chime in with a second opinion on something else we said? (It wouldn’t be the first time. But you probably already kno…

As I’m sure others will bring up, altitude also affects octane requirements of your engine. At a higher altitude, air is thinner, so you pack less of it into your cylinders, effectively resulting in a lower compression ratio. As a result, your engine’s octane requirement is lower at higher elevati…

My brother-in-law just bought Pontiac G6 hardtop convertible and asked me about Top Tier Detergent Gasoline. Yep, there is such a thing. Is it important to buy fuel only from these suppliers? http://www.toptiergas.com/

It’s probably all a scam by the oil companies with a lot of help from the auto manufacturers, but why has my stock '98 5-spd Neon always run better on premium?

My '03 Jeep GC Overland with 4.7L HO V-8 runs fine on regular fuel, altough the mfr recommends Premium. Does the computer constantly adjust the timing to compensate for lower octane? Am I doing any long-term harm to the engine? My mileage is mostly highway with little load on the powertrain. Thanks… …

Many of my friends put premium into their regular cars…waste of money. I can run 87 octane in my 87 Porsche 944S which requires 90. Knock sensor takes care of it…slight loss of power in my opinion, but my brother notices no difference when he borrowed it and tried both octanes. My daughter’s 94 Gala…

I am anticipating getting a new car, and I would like to see more posts on emission affects upon using lower octane fuel in a higher compression engine which “recommends” high octane fuel. Some people have told me that lowering the octane will result in a “gummed up” engine with time.

I have a 1995 Dodge caravan 3.0 with 158K miles on it (not all mine). This summer, I have tried premium (93 octane) because the car had no power to speak of and was only getting 18-19 mpg. Since changing to premium (8 weeks and 3500 miles ago, I have averaged 23 mpg (27 high, 21 low) and have save…

you bought a performance vehicle why chince on the fuel to run it? And yes, you will most likely see damage done to the turbo(though more likely the engine than the TC) if you go regular

If the car pings, go to a higher octane. If you notice a reduction in power go to a higher octane. A QUESTION WAS ASKED ABOUT Top Tier Detergent Gasoline IS THIS JUST A ANOTHER BOONDOGGLE BY A COUPLE OF OIL COMPANIES. MY CARS HAVE BEEN DOING FINE USING ARCO AND COSTCO GAS. I recall when I was t…

Premium versus Regular

The Show

system July 31, 2007, 8:40pm 19

I have WRX (turbo). Will running regular gas kill the turbo. I drive 40-50K a year and would love to save some money. Thanks for the replies.

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Premium versus Regular

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