What happens if you put 87

That means the parts will grate against each other and cause big damage. Instead, call a mechanic and have them rectify the situation. Complete our short fleet fuel card form and we'll help you take the first step towards managing your fleet. We never charge any annual, startup, or hidden fees. Reach out today to see how we can help your business save money.

Nov 9, General Information. Octane measures resistance to knocking, ergo, higher altitude means you can use lower octane. If your car runs fine on Regular 87 at sea level, it should run fine on Regular 85 at high altitudes. It's not an exact equivalence, but it's good enough for a car. You actually experience knocking. Differences in octane level and the amount of ethanol added to gasoline can have a dramatic impact on fuel economy and emissions.

Low- octane fuel — rated 85 or 86 as opposed to the 87 for regular gasoline — is common in the Rocky Mountain states, said General Motors fuel specialist Bill Studzinski. This is not true for modern gasoline engines. Premium gives better gas mileage Because premium gas has a higher octane rating than midgrade or regular gas , it produces a little more power when burnt. Designed for performance cars with large, powerful engines, premium also helps minimize the risk of preignition inside highly-stressed, hot engine cylinders.

At higher altitudes , the thinner air compensates for the gasoline's lower octane , so the engine can usually run without detonation. The 88 is for cars and newer. If you have a high compression engine, you need a higher octane. Step 1: Check the label inside the fuel door.

Open the fuel door. If you have a release lever or button inside your car , release the door to check. Look for a label on the fuel door or by the fuel filler neck.

Sunoco GT Plus is a high octane , highly oxygenated unleaded race fuel. Because GT Plus contains more oxygen than is allowed in pump gas , it is for off-road and racing use only. However, it will not harm oxygen sensors. E85 is typically cheaper per gallon than gasoline but slightly more expensive per mile. Drivers should notice no performance loss when using E In fact, some FFVs perform better —have more torque and horsepower—running on E85 than on regular gasoline.

What happens if you put 85 gas in a 87 car? Category: automotive green vehicles. Your owner's manual will tell you the minimum octane rating that your car requires. For most run of the mill modern cars , this will be somewhere in the 85 to 87 octane range, or Regular unleaded gas. A mechanic once advised me to run 2 tanks of premium, name brand fuel, back to back, once a year.

He explained that that the premium gas contains cleaning additives that would help my engine to run its best. Is that no longer true? I know that all fuels come out of the same reserve, and the only difference between them is the additives. The A. By Alan Henry.