What gas do you guys put into your 2.2?

 

What it calls for in the manual......Regular unleaded 87 octane.

I recall hearing that putting higher octane in an engine that doesn't call for it, is wasting money. I believe the SS/SC calls for 92 or higher octane. But I could be wrong.

 

I think the only reason Chevy recommends high octane in the 2.0L is to avoid possible premature detonation as well as provide the extra power required to run the supercharger. The manual states the 2.2L requires 87 Octane (as MichiganMike pointed out) and that's what I put regular in my LS. I will more than likely switch to high octane for one tank every few months to give it a bit of a cleaning since the higher the octane, the cleaner it burns but the engine doesn't require it. The only reason you would have to run high octane in your 2.2L is if you were to install a turbo or supercharger kit, but it's really up to you what you want to run in the engine.

Permafried-

 

87 for 2.0.. higher octane isnt recomended by the factory.. but i think if you were to throw any mods you should put higher octane in it.

 

Hopefully you typed 2.0 by accident when meaning to type 2.2 .

Permafried-

 

Just to save you a coupla bucks, The detergents in gasoline are the same regardless of the octane specified. Higher octane fuel does not burn cleaner, does not burn faster, does not have more potential in it. It just raises the flash point so that it does not light off until the spark plug ignites it. More resistant to pre-ignition. Once it starts burning, the flame will propagate at the same speed in your combustion chamber and the long chain hydrocarbons (gas) break apart and give the same energy.


Something I have found and use every 100K miles or so on my vehicles is "Motorvac."

After a treatment my vacuum goes up 2-4 psi. Blew a whole bunch of carbon out the tailpipes of my LT1 Caprice when I treated it. Ran a lot smoother too. 'Course it had 175K on it the first time I used it.

A lot of places have it, probably near everyone on the forum. Not so much use on a new car, but if you have a high-mileage vehicle that you use, you might want to check it out.

http://www.advancedautobizz.com/fuel-system.htm

 

My last car was a Pontiac Grand Prix GTP supercharged. These cars have knock sensors in them that when they see knock it retards the timing. So using 87 octane, timing retards
and you lose your zoom zoom and prolonged use of 87 in supercharge or turbocharge can severly damage your engine.

 

My car just feels a little more responsive with 89 octane so thats what I've been putting in it...granted I've got a 96 2.4 with 135k on it.

 

no i meant 2.0.. the factory says you do not need 91 or 93 in the S/C.. 87 will do just fine.

 

87 will do fine but you'll be getting beat by cobalt LS's,cavaliers and civcs b/c the timing will be retarted.

 

hmm.. i wonder how i was misled?.. luckily ive been putting 91.. but i couldve sworn i was told that 87 was safe

 

it is....but u wont get optimum performance

 

I realize they may be lying, but in Canada many gas companies advertise that their higher octane fuels do contain more detergents and extra additives.

http://www.petro-canada.ca/eng/prodserv/fuels/6819.htm
http://www.petro-canada.ca/eng/prodserv/fuels/6820.htm

 

in the manual I received for my 2.2L it even states that the 2.0L should be run at 91 octane.

I notice that for the most part my car feels really sluggish so I tried 91 octane in my 2.2L and it didn't make a difference. It feels sluggish like timing is being pulled or something so I thought 91 octane might be better since we are running at 10:1 compression but nope, no difference.