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What does using an octane rated higher than your vehicle do?
Wastes money.
Using an octane rated lower than your vehicle?
Using an octane rated lower than your vehicle specification will damage the engine. I would recommend not doing that.
Using an octane rated higher than your vehicle?
Use the lowest octane that does not 'ping' (detonation). The higher octane is not only more expensive, it can, in some cases, cost you performance. Its got to do with things like the latent heat of vaporization and other scientific formulas.
Does it help to use octane rated higher than your vehicle requires?
No. * Added - Unless you are prepared to modify the tuning of your engine, the recommended octane rating is the best. Higher octanes do not provide more power, they simply burn slower. The higher the octane, the harder it is to ignite, which in most cases, will have no effect, but can make make the car harder to start. If you have an older car and have the equipment to adjust your vehicles system, using a higher octane fuel can result in higher gas mileage and more power. It requires that the spark timing be advanced to begin burning slightly sooner - and if a lower octane is then used with the same set-up, it can destroy the engine.
Using an octane rated higher than your vehicle will burn your cylinder heads?
It can, ultimately. It will ruin the plugs and valves, the compression ratio will not be correct, thermal transfer will be to high. The timing will be wrong. It will not be efficient. The small amount of extra HP is not worth the expence when it goes wrong
What is the fuel octane reguirement of a 08 buick lucerne cts with the 4.6 northstar v8?
From the owner's manual: "If your vehicle has the 4.6L V8 engine (VIN Code Y), use premium unleaded gasoline with a posted octane rating of 91 or higher. You can also use regular unleaded gasoline rated at 87 octane or higher, but your vehicle's acceleration could be slightly reduced, and you might notice a slight audible knocking noise, commonly referred to as spark knock." So you can use either regular, mid-grade, or premium. I have not noticed any loss of acceleration or spark knock by using 87 octane fuel.
Why is your car making a gurgelling noise?
2 Possibilities come to mind immediately: 1) Low coolant and air in the cooling system. As coolant is circulated through the heater core you may hear this noise you describe 2) Perhaps vehicle is "pinging" due to Spark timing advanced too far or the fuel you are using has too low an octane rating for the vehicle. try another grade of fuel. Perhaps a 91 octane if you are using an 89 octane rated fuel.
What is the difference between regular and premium gas?
Premium gasoline is rated between 91 and 93 octane, while regular is rated at 87 octane. The octane rating is the resistance of the gasoline to igniting, and higher compression engines need higher octane rating to prevent pre-detonation or pinging. Check your owner's manual to see if you need premium or can run the less expensive regular.
What is the difference between unleaded and unleaded plus?
Octane Rating. I could get into the stoichiometry and how they rate it and what not, but the short answer is that a higher rated octane fuel burns for slightly longer than the lesser rated gasolines. This can help reduce or eliminate knock while improving engine performance.
What is the horsepower Ford Mustang gt 2012?
For a 2012 Ford Mustang GT : ( I believe that is rated at 412 horsepower if using " premium " unleaded , 91 octane ) although it runs fine on " regular " unleaded , 87 octane
Should you use regular or premium gas for your BMW 328i?
BMW only takes gas rated at octane 91 or higher, and that is Premium at the gas station.
Why do you use octane in vehicles?
Octane is a measurement of the combustion process. Most commonly you will see "85 87 91" octane ratings on your average gasoline pump, this of course indicates the amount of octane that, that specific product contains. The only purpose of octane is to resist detonation. What this means is that a higher octane gasoline is actually more stable than a lower rated fuel. When any kind of fuel is subject to high pressure and high heat (just like you'll find on the compression stroke of an average automobile) it becomes unstable and in some cases will spontaneously combust without an ignition source, this is called "detonation" which will make your engine sound like it's "knocking". Vehicles requiring a high octane fuel most often have engines with higher compression ratios which of course cause higher heat and higher pressures. Most common vehicles only require an octane rating of 85, octane ratings of 87 and 91 won't make your car run any better.
