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 That won't make a financial case for running 93 octane, but then you didn't buy the expensive engine as a rational choice.
You can think of this EcoBoost engine's more aggressive high-octane tune as a sort-of sport mode that can be switched on or off with every fill of its We always assumed that mid-grade fuel existed chiefly to bilk a few more dimes from the type of people who ask the dealer to undercoat their car. Turns out it's also for owners of Fiat Chrysler's Hemi 5. With no mention of that on the fuel-filler door, though, a driver would have to read the manual to know.
With just miles on the odometer and looking as if it had already been hand washed with grit sandpaper a half-dozen times, this Charger is unlikely to ever taste 93 octane again.
Oh well. The Charger's manual says 87 octane will provide "satisfactory fuel economy and performance. Similar to the BMW, the Dodge's gains on the dyno 14 horsepower and 23 lb-ft of torque translated into negligible improvement in our real-world acceleration testing. Saddled with elephantine heft and eager to spin its rear all-season tires at launch, the Charger posted the same 4.
At triple-digit speeds, the higher power on 93 octane gave the Charger an advantage measured in tenths of a second. The Dodge also posted a 0. The octane number only means that your fuel will burn more efficiently than ever. Begin typing your search term above and press enter to search. Press ESC to cancel. Ben Davis March 22, What gas does a Honda CRV take?
What kind of gas goes into a Honda CRV? What is the best fuel for Honda CRV? Can you put 89 gas in a Honda CRV? What happens if I put regular gas in my Mercedes?
Do Mercedes-Benz really need premium gas? Store your gasoline in a clean, plastic, sealed container approved for fuel storage. Close the vent if equipped when not in use and store the container away from direct sunlight. If it takes more than 3 months to consume the fuel in the container, we suggest adding a fuel stabilizer to the fuel when you fill the container.
Check it before each use. You can also find general storage instructions for your engine here:. Find more tips for GCV engines here. The length of time that gasoline can be left in your fuel tank and carburetor without causing functional problems will vary depending on a variety of factors. Fuel formulations vary by region. Depending on where you operate your engine, fuel may deteriorate and oxidize more rapidly in as little as 15 days.
Please check with your servicing dealer for storage recommendations and precautions specific to your region. The air volume in a partially filled fuel tank promotes fuel deterioration. Very warm storage, high humidity and variable temperatures accelerate fuel deterioration. Fuel deterioration problems may occur in less than 30 days, particularly if the gasoline was stored in your portable fuel container for an extended period of time.
We recommend that you purchase fresh fuel from a busy, reputable gas station in a volume that will be used in less than 3 months. This section covers all aspects of storage such as adding fuel stabilizer and draining the fuel tank and carburetor, as well as storage precautions and removal from storage.
GC and GS model storage information. GX and GXV model storage information. In storage, gasoline immediately starts to naturally oxidize and deteriorate.
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