Lower grade for small 4 cylinder cars, regular grade for sedans or 6 cylinder cars and high grade for bigger cars/trucks with 8 cylinders. Someone told me this and I can't tell if he was joking because I don't know anything about cars. I have a Toyota Corolla and he said I was damaging it by using high grade gas. Is he right?
2006-07-17 06:18:59 · 20 answers · asked by Anonymous in Cars & Transportation ➔ Commuting
That would be incorrect. grade would be the octane level in the gasoline. If you have a highperformance vehicle, that is when you should worry about the grade to get. if you have a highperformance vehicle, you can use 89 octane gas if you wanted, the vehicle may not run to its potential. if you were to use 92 octane, that is when you will find out how your car is suppose to run and sound. sorry...didnt see your last question about your Toyota. Whoever is telling you all this about your car, sorry to say is an idiot. you are only damaging your purse or wallet. you can use high octane gas if you would like, but you do not need to. 89 octane (Regular) will work fine with your car
2006-07-17 06:27:07 · answer #1 · answered by Frank 3 · 3⤊ 0⤋
No the grade of gas tells you how much the gas can be compressed before combustion. If the octane rating is too low, the fuel will combust before the spark plub ignites the fuel/air mixture in your car and the engine will "knock". The higher rated gas won't hurt your car but you are waisting your money by purchasing it for you car. Your owners manual will tell you grade of fuel your car needs. Most people buy the higher octane because they think it is cleaner or has more power. That is false. No matter the rating, every gallon of gas has the same heating value. The higher octane fuel does not have more power.
2006-07-17 06:20:37 · answer #2 · answered by kdog 4 · 0⤊ 0⤋
No. That is not correct ALTHOUGH I could see where someone might get that idea. Depending upon the compression ratio of your engine you should use 87, 89 or higher octane gas. The octane rating just describes when the gas could ignite due to pressure rather than spark. If you've got high compression ratio engine (exp. super- or turbocharged) you should use the high octane. Otherwise you're probably ok with 87 or 89. You ARE NOT damaging your car by using high grade gas.
2006-07-17 06:26:33 · answer #3 · answered by Dubberino 3 · 0⤊ 0⤋
Absolutely NOT!
Different car gas grades are available for cars that have a manufactured recommendation for using a higher octane.
All cars in the US can run on 87 octane, and are designed to run on 87 with the exception of a few high performance vehicles, and if your car is one of them, it will say so in the owner's manual.
The only other exception is for vehicles that have after factory modifications that require special blends for optimum performance (like race modified cars, police cars, show cars, etc.)
2006-07-17 06:30:14 · answer #4 · answered by pknutson_sws 5 · 0⤊ 0⤋
No, the guy was pulling your leg. It has to do with the design and performance level of the engine. Usually higher performance cars (BMW, for example) require higher grades of gas.
You will not hurt your engine with premium fuel, but you are wasting your money. On a Corolla engine there is no advantage at all to using premium gas over regular.
2006-07-17 06:22:37 · answer #5 · answered by JeffyB 7 · 0⤊ 0⤋
No, it applies to the way the engine is meant to run. A corvette is still a smaller car, but it requires the higher grade because it needs better burning fuel. Using a higher grade in your car won't do damage, but it won't help it either. Read the manual and see what it says your car should take
2006-07-17 06:22:04 · answer #6 · answered by Anonymous · 0⤊ 0⤋
it depends on what your car was design to do. High performance usually means high grade. On luxury vehicles is usually the luxury sports that require High grade. Rule of thumb if you hear a knocking in the engine after putting regular, the vehicle runs on hi grade. Depends what your corolla is set up do do if it has a VVTI it doesn't matter what you put on it, if you put high grade will give you better mileage but will also perform unexpectedly going up hills producing higher RPMS lowering your fuel efficiency. Regular will cause your vehicle to be sort of sluggish up hills but will maintain a level of RPMS maintaining fuel efficiency, in normal driving because of the low grade will be slightly less fuel efficient then high grade, but not enough to off set the price of fuel. So use regular. If your vehicle is not VVTI you are damaging your engine using High grade fuel so use REGULAR.
2006-07-17 06:31:53 · answer #7 · answered by wiseornotyoudecide 6 · 0⤊ 0⤋
Yes the mixtures are different. The more octane in the gas the higher the combustion in the cylinder. If you engine wasnt built to withstane the added power it will do damage of their is to much. Like putting race fuel in a model T.......
2006-07-17 06:23:40 · answer #8 · answered by nlbchipotle26? 2 · 0⤊ 0⤋
higher octane makes your car run better. i was told by my shop teacher than high-octane gas is hard on the catalytic converter and causes them to burn up. there isnt too much difference in 87 and 89 octane unless you find some that has a 10% ethanol mix. if your car was made in the last 10 years then you should be alright running an ethanol mix. if not then it will make your seals burn out along with the converter.
2006-07-17 06:24:47 · answer #9 · answered by Shooter 2 · 0⤊ 0⤋
No. High grade gas is better than low grade gas, but most often there is no performance difference. Unless your car specifies that you should use high grade, you can use the lowest grade that does not cause your car to have engine problems.
2006-07-17 06:22:03 · answer #10 · answered by Blunt Honesty 7 · 0⤊ 0⤋