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Dec 16, 2020 · Premium diesel. Because diesel engines don't ignite fuel to create power (fuel is added to the air that is compressed instead), premium diesel doesn't usually feature a higher...
- Senior Test Editor
Jun 26, 2024 · Keeping things simple for consumers, when a participating retailer sells Top Tier fuel, all octane grades from regular to premium gasoline and diesel must adhere to the Top Tier standards.
- Sierra 1500, Chevrolet Silverado 1500 6.2L V-8
- Ram 1500 TRX
- 1500 (and 1500 Classic) 5.7L V-8
- San Titan and Titan XD 5.6L V-8
- Bonus Round: 2021 Ford F-150 Raptor
- The Bottom Line on Premium Fuel
GM recommends using 93 octane gasoline for its top-of-the-line 6.2-liter V-8-equipped trucks. The owner’s manual does state as low as 87 octane is acceptable for the engine. However, to achieve maximum performance and fuel economy you must use 93. This problem with a vehicle requiring that octane is 93 isn’t available everywhere. The website find93...
The 2021 Ram TRX will require, not recommend, 91-octane fuel. This one isn’t too surprising given the TRX uses a high-performance 6.2-liter supercharged V-8 that makes 702 horsepower. While 91 octane is available in most areas, we would like to emphasize the manufacturer requiresyou to use that grade of fuel. Requires. Using less than 91 could resu...
Ram recommends using 89 octane, which is considered mid-grade, in all 1500s equipped with the 5.7-liter Hemi V-8 and 5.7-liter V-8 eTorque. However, Ram states in its owner’s manual fuel as low as 87 octane is acceptable, but maximum performance and fuel economy is achieved with 89. What’s surprising about this octane recommendation is the 5.7-lite...
Nissan debuted the 2020 Titan in the fall of 2019 with an updated 5.6-liter V-8. New for 2020, Nissan raised the capability of the standard 5.6-liter to 400 horsepower and 413 pound-feet of torque. Of course, there’s a catch: To achieve this new rating, you must use 91-octane premium fuel. Nissan stated at the time, though, the engine more than cap...
Though Ford has yet to release any official details on the upcoming, redesigned Ford F-150 Raptor, there have been rumors of a potential large-displacement V-8 being one of two engine options. TFL Truck recently reportedthe new Raptor may get a 5.2-liter supercharged V-8, likely with well more than 700 horsepower. This engine is currently available...
That closes out our list for the 2020-2021 model years. Unfortunately, it appears to be more and more common to find a V-8 truck that recommends (or requires!) premium fuel. So, it’s important to keep in mind how much you’re willing to spend in fuel and what kind of performance you expect when shopping for your next truck. So, we want to hear from ...
Jul 19, 2022 · The real measure of a diesel fuel's quality is in its cetane number (similar to petrol's octane rating) which evaluates how ignitable the fuel is when compressed (which is how a diesel engine burns its fuel; there are no spark plugs, ignition relies on compressing the diesel-air mixture).
Aug 4, 2019 · We tested higher octane fuel than manufacturers require on the Honda CR-V, BMW M5, Ford F-150, and Dodge Charger to see if it impacted acceleration or MPG. By Eric Tingwall Published: Aug 4,...
- etingwall@hearst.com
- Print Director
Dec 1, 2020 · Cetane rating differs from the octane rating used in gasoline in that the higher the number of gasoline on the octane scale, the greater the fuel resistance to self ignition, which is a desirable property in gasoline engines with a high compression ratio.
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Oct 25, 2019 · For best overall vehicle and engine performance, premium fuel with an octane rating of 91 or higher is recommended. The performance gained by using premium fuel is most noticeable in hot weather as well as other conditions, for example when towing a trailer. I needed to up date this post. When the 7.3 gas documentation first came out it said ...
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