Which grade of Gasoline Fuel should i use?

[BLKCMY00]

yeah.. which grade of Gasoline Fuel should i use in my 2000 camry 4cyl. with no mods? but i sometimes drive aggressively.

Regular (87-octane) , Plus (89-octane) or Premium (92-octane)

Thanks

[NYC_99Camry]

use regular gasoline is fine. but once in a while use the premium. also, i you have any mods, it would be great if you use premium.

[Mike Gerber]

Use regular 87 octane. Your owner's manual should tell you the same thing.

Mike

[Venom_5]

87 octane is just fine ... the higher the octane, the more resistant to detonation ... this is helpful if you have a more potent engine, to prevent pre-detonation ... or if youre knocking/pinging from a poor AFR

no reason to waste money on 89/91/93 octane, although i admit that i do it myself sometimes

[Quicksilver300]

89 octane is like giving a camry a doggy treat, at least that's kind of how I see it at the time whilst putting more expensive gas in my tank. I always thought it cleaned the valves a bit, by making the fuel burn hotter, but I'm most likely entirely wrong.

[Tom 2000]

Use regular 87 octane, but make sure you buy a good brand.

Pick from one of these.

http://www.toptiergas.com/retailers.html

I bought gas from the same Chevron station for almost 8 years, then when gas was really expensive last year (like $3.40 a gallon), I went to Costco. It was cheaper, but the degradation in performance was not worth it. The car was sluggish and it just felt like a dog.

I went back to using Chevron last year and it runs fine again.

[Mike Gerber]

"the higher the octane, the more resistant to detonation ... "

This is correct. The higher the octane rating the higher the flash point of the gasoline. In layman's terms, that's the temperature at which the fuel (and air) mixture will ignite. There are additives in higher octane fuels to raise this flash point. It basically means the spark plug must spark to ignite the mixture. Detonation, as Venom_5 mentioned, is when the heat of the compression stroke begins to ignite the mixture, before the compression stroke is complete and before the actual spark of the spark plug. This causes the pinging that can be heard in some engines. Older engines that ping usually have carbon buildup around the intake valve(s). This carbon buildup usually creates hot spots. It's these hot spots that can ignite (preignition or detonation) during the compression stroke. Engines with carbon buildup that are exhibiting this detonation, along with engines designed to run at higher compression ratios are the only engines that can benefit from using higher octane fuels. Filling your car with higher octane fuels than the car needs, will give you no added benefit. It will however, benefit the major oil companies profit margins. That's why they go to great lengths to promote these higher octane fuels. One commercial I remember even states "for engines that can benefit from higher octane fuels." Check your owner's manual if you are in doubt as to what your car's octane requirements actually are. Most cars require only 87 octane.

Mike

[94CoupeV6]

Just use regular gas like you're supposed to. The V6 on the other hand requires premium (unfortunately) due to higher compression (10.5:1).

[ASG14]

I have a V6, and have used 87 for over a year. All 91/93 does is add a couple HP in the V6. It does not do shit on the I4. I can do without that couple hp for the price difference.