The reality is that this is likely a placebo effect. However, premium fuels in Canada do not contain ethanol, so they are a better choice if your car sits for long periods of time.
Vehicles with high-performance engines require premium gas and while it may be tempting to fill up with regular fuel, consider the potential long-term damage you may be causing. Fortunately for those motorists with vehicles that require regular fuel, there is no significant proven benefit to filling up with premium gas.
The quality of regular gas has improved considerably over the years thanks to emissions regulations. Regular engines will not benefit from more expensive premium gas, but regular oil changes and service appointments are a proven way to improve fuel economy and preserve your engine.
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. That difference seemed to grow, and we could even feel it from the driver's seat at the test track. Compared with premium fuel, regular feed sapped the F's urgency both leaving the line and in the meat of the tach sweep.
The rush to 60 mph softened to a still-blistering 5. Tapped into the Ford's CAN bus, we recorded a peak boost pressure roughly 1. The high-octane gas also helped when soft-pedaling the accelerator, elevating mph fuel economy from I find I get higher miles per gallon when I use any gasoline that does not have ethanol in it. When I use ethanol gasoline, my mileage drops into the 13 to 15 miles per gallon range.
When using non-ethanol gasoline, my mileage goes up to the 23 to 27 mileage. What about 85 octane? Which is the best gas for ur car if a mechanic tell u u get the high percentage for ur car to help clean gas line out.
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. Fuel with a higher octane rating can stand up to higher compression before it detonates. Essentially, the higher the octane rating, the lower the likelihood that detonation happens at the wrong time. On occasion, this occurrence will likely not harm your vehicle.
However, if it happens frequently it may quicken the decline of your engine's performance. Engines with high compression ratios or turbochargers often require high octane fuel found in premium gas for optimal performance and fuel efficiency. However, the majority of cars on the road today are optimized to run on regular gas. The detergent additives in your gasoline are far more important than the octane level, as they help clean your engine and optimize performance. Each retailer offers a different blend of additives, used across all grades.
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