If so, why?
2006-10-18 05:49:43 · 9 answers · asked by wscarpelli@sbcglobal.net 4 in Cars & Transportation ➔ Maintenance & Repairs
The term "octane rating" refers to the anti-knock qualities of the fuel. There actually is a chemical compound called Octane. A high compression engine requires a higher octane-rated fuel to prevent pre-ignition (which happens in a diesel engine). A compression ratio over 8 or 8.5 usually requires higher octane-rated fuel than one with 6 or even 7.2 pre-ignition damages your engine, so it is best to avoid. The local dealer for your model car can tell you which fuel to use.
2006-10-18 05:57:45 · answer #1 · answered by Scoop81 3 · 0⤊ 0⤋
A distinction of three octane factors isn't a great number of a replace. you're able to be able to word a sprint extra beneficial overall performance 0.5 way by way of a tank finished. maximum mavens declare that the patron is dropping money by way of paying for a better octane then an engine desires. some even declare that BMW specifies a better octane that the automobile somewhat desires. yet those specialists tend to overlook that each and every so often a better octane possibly extra low priced according to how ethanol is subsidized in a given state. If the quantity of ethanol will boost too plenty in a ninety 5 it may reason a difficulty with the gasoline device (lean burn and seal mess united statesin the gasoline line). So possibly octane isn't the main serious element to contemplate in this situation.
2016-12-08 16:52:00 · answer #2 · answered by kluesner 4 · 0⤊ 0⤋
It makes more of a difference going to a lower octane fuel on an engine designed for high performance,than it does using higher octane on a reg.unleaded engine.If your engine is supposed to use 87 octane it will probably run OK on 89 or 91,but you are wasting your money.On the other hand a car thats supposed to run 91 just won't run as good on 87.I have an older Lincoln MK8 with the DOHC 4.6 and the performance,as well as the gas mileage suffers when I run a lower grade fuel.I ran a couple of tanks of 87 in it back when the gas prices were $3.50 a gal. for super unl(91) and it ran like crap.
2006-10-18 06:07:24 · answer #3 · answered by dutch 2 · 0⤊ 0⤋
Depends on the age of the engine, most cars in the 70's were made to run on regular and since that is not an option anymore, then you need to run a higher octane, and then still clean the points.
2006-10-18 05:58:18 · answer #4 · answered by flip103158 4 · 0⤊ 1⤋
Yes, the higher octane means less knocking. So I guess it does matter, depending on the amount of knocking you can put up with. I use 85 in my truck because it's cheap and I don't notice the knocking. Probably could run higher stuff every once in a while.
2006-10-18 05:58:31 · answer #5 · answered by Anonymous · 0⤊ 0⤋
Yes. I usually used 87 octane and then ran some with ethanol in it and it totally stripped the gunk out of my fuel filter and into my gas and lines. They say that higher octane burns to hot for some vehicles. Look in your owner manual to see what is suggested for your vehicle.
2006-10-18 05:52:49 · answer #6 · answered by bradys_mommy 4 · 0⤊ 1⤋
yes it matter.without the right octane,your engine will ping and cause damage to the engine and higher tailpipe emission. high compression engines and vehicles with alot of carbon deposit build-up inside the cylinder require high octane gas
2006-10-18 05:53:26 · answer #7 · answered by LEXUSRY 5 · 1⤊ 0⤋
sometimes higher octane.......will burn off some of the sludge in the piston area............its ok to use higher octane........maybe once every 10 tanks of gas.
better option.......is a basic tune up
2006-10-18 05:57:24 · answer #8 · answered by purefire41 3 · 0⤊ 1⤋
Yes to avoid knock and engine damage. Check your manual.
2006-10-18 05:52:46 · answer #9 · answered by gauthier613 3 · 1⤊ 0⤋