93 octane where to buy

While fuel economy at 75 mph ticked up from Honda built its reputation on a line of unassuming, egalitarian motorcycles in the '60s.

Nearly 60 years later, the company's identity is still predicated on the same sensible and modest ethic, right down to the fuel that you put in the tank. BMW explicitly warns about engine damage from doing so, and while that seemed unlikely in such mild temperatures, using the cheap stuff would have been wildly out of touch with what an owner would do at least until this M5 reaches its fourth owner sometime in BMW requires octane fuel at a minimum, with 93 recommended, so we did just that, switching between the common forms of premium gas depending on which state you're in.

Are Californians, with their watered-down premium, leaving something on the table? We wanted to know. The dyno results shocked us. Not because of the hp difference between 91 and 93 octane. No, that delta was in line with expectations.

Our jaws were left hanging by just how much power and torque we measured. While BMW claims horsepower at the crank, the dyno reports it makes that much at the wheels after driveline losses on octane premium.

And both fuels produced significantly more torque than BMW's advertised lb-ft. The higher-octane fuel trimmed a single tenth of a second across all of the M5's acceleration times. That results in a time-bending 2. The BMW also claimed the largest fuel-economy margin in the test, but the 0.

The M5 Competition stands as proof that the octane rating does make a difference, although in the case of these two premium fuels, if you're forced to use 91 octane, you're hardly missing out. At Naturally then, the Ford hauls ass as effortlessly as it hauls a half-ton of manure. When fed 93 octane, this pound, self-propelled wheelbarrow will crash 60 mph in 5. Power at the wheels dropped from to horsepower with the change from 93 to 87 octane. I thought that octane was gasolines ability to hold oxygen therefore at higher elevations where the air is thinner the gasoline cannot hold as much oxygen resulting in a lower octane rating.

Is this correct? When your cars engine with carburetor is tuned for sea level driving, the gasoline octane rating should be determined on the compression ratio of the engines combustion chamber. The carbureted engine will start to smoke black smoke, too much fuel and start running erratically! Old hot rodders such as myself always carry a case with different sized main jets, and stop before the erratic behavior begins.

This is where you better have knowledge of how to disassemble your carb and reassemble it after changing jets. You want less fuel and more air, then a timing light to retard your distributors spark a few degrees. Simple eh? What does change the octane numbers in your gas is sudden stops,and sloshing around in a tank without baffles or foam blocks to keep the gas from doing the Big Slosh!!

I love my car and all of the tips and tricks that are on this site are very informative, thank you. In the event that Premium Status is not maintained in the following month, you have a grace period of three consecutive months starting from the end of the month in which Premium Status was last earned before your Premium Status benefits expire.

Actual benefits will vary based on factors such as vehicle type, driving style and gasoline previously used. New accounts only. Bonus discount will be paid as a statement credit after qualifying purchases are made within the first 2 months from account open date. May take billing cycles for statement credit to appear with a qualifying fuel purchase.

Offer valid at participating Exxon and Mobil stations. They need the octane to prevent uncontrolled combustion, and they need a fast-burning fuel so that the flame front can span the large bore of the combustion chamber quickly. Look for a specific gravity close to 0. Of course, consult with the fuel producer to verify your assumptions. You might be surprised to learn that some of the highest octane fuels may also be some of the fastest burning fuels!

You might also be surprised to know that fast burning fuels may not need as much timing as their slower burning counterparts.