TMR Net Shark
4/26/2007 12:29:38 AM
Generally stating in any car, can I use 91 octane in a car that says to use 87? I know if you do the reverse you get knocking or pinging. Will using a higher than recommended octane hurt my engine at all? Or will it actually help it?
Cars in question:
2007 Toyota Camry
2008 Mitsubishi Lancer GTS
1998 Ford Explorer XLT
TheEngineer
4/26/2007 7:56:59 AM
nope, shouldnt hurt it at all
Dusty Eclipse
4/26/2007 12:31:55 PM
I couldnt see why it would hurt it either... but for some reason whenever I used it in my Civic that called for 87 (Yes, the Civic I wrecked.) it tripped the CEL.
Manybrews
4/26/2007 6:05:12 PM
using higher than recommended or needed octane CAN cause problems, as well as piss away money.
do NOT use it unless called for.
period.
year1lazer
5/10/2007 10:32:03 PM
all higher octane does burn faster i tried it on my tiburon V6 i lost mpg.plus it cost more. your car will run better on 87 oct unless you have a car that needs 91 oct
silvercoupe97
5/11/2007 12:05:19 AM
Higher octane doesn't burn faster, it burns slower, that's why turbo cars and high compression cars use it. It's to keep knock in check AKA pre-ignition.
quote:
Octane is NOT a measure of power but of the fuels’ resistance to ignition from heat. A higher-octane fuel, under identical combustion chamber conditions, will burn slower.
http://www.bajajusa.com/High%20Octane.htm You lost milage because your car spit out unburnt fuel out the tail pipe.
Clipse1
5/15/2007 10:20:04 PM
I think
year1lazer is right! I tryed it too and I got the same results
Kaede.Noir
5/15/2007 10:56:48 PM
quote:
ORIGINAL: Clipse1
I think year1lazer is right! I tryed it too and I got the same results
but it has been proven by silver......
silvercoupe97
5/15/2007 11:09:26 PM
quote:
ORIGINAL: Clipse1
I think year1lazer is right! I tryed it too and I got the same results
You have to think about that a minute. If higher octane burns faster, turbo cars and high compression cars would be blowing engines left and right. Higher octane burns slower and helps keep this from happening.
If anything, your cat catches the unburnt fuel like it should and it evaporates or if you go for long drives, the cat gets saturated and unburnt fuel gets spit out the back....thus, loss of milage.
Higher octane isn't a cleaner gas nor a "better" quality of gas. It's a slower burning gas.
