GenVibe - Community for Pontiac Vibe Enthusiasts

Is it normal for the mpg to go down? I used the Chevron Techtron injector cleaner and the car got less than 30mpg. The car has about 40k on odo.

Probably, gotta figure that dirty injectors spray less gas, meaning it's using less air and making less horsepower.Clean injectors, spray more gas, engine pulls more air, makes more horsepower.

Is there still some of the injector cleaner in your gas? The reason I ask is that I noticed when I use it that my mileage drops a bit for the next couple of tanks until it's all out of the system. Also, once I put the Techron in my tank I usually drive it down as close to empty as I can prior to the next fill-up. BTW, how much did your mileage drop?

It's not a bid drop but went down from 32mpg to 28mpg. I have to check with my wife (she's driving it) if she still is seeing this behavior. There still might be that cleaner in the system since this is the first fill up after it was added.

i use the techron after every oil change religously have for years!! occasionaly the mileage will drop a tad BUT ONLY for the tank that has had it added...I almost always see a very small increase in mileage for the next serveral tanks before returning to normal....

timely post...my last tank had the injector cleaner and i noticed an increase in milage! In the past i've seen similar increases in milage with the tank containing the cleaner and for a couple tanks after.i'm using Canadian Tire Motomaster brand injector cleaner.

Quote, originally posted by Atomb »timely post...my last tank had the injector cleaner How often ie mileage do you guys put in an can of injector cleaner?

I second this question.

Never, i feel that most gas has enough detergents to keep it clean enough for my needs.

Quote, originally posted by Pick »Never, i feel that most gas has enough detergents to keep it clean enough for my needs.And I know the Vibe's manual nowhere mentions using any 'injector cleaner' beyond good gas.

On many cars I have I have put injector cleaner in and it makes a noticable difference. My dad has a 05 escape and put some in and got better mileage and he only has like 16k miles on it.

every oil change (3,000 Miles)

Quote, originally posted by zionzr2 »i use the techron after every oil change religously have for years!! occasionaly the mileage will drop a tad BUT ONLY for the tank that has had it added...I almost always see a very small increase in mileage for the next serveral tanks before returning to normal.... You'd be better off using it in the tank previous to the oil change. Some will get into the oil,

Quote, originally posted by Boxgrover »And I know the Vibe's manual nowhere mentions using any 'injector cleaner' beyond good gas.i will add some every 6-8,000 km. generally, the gas is clean (as per Pick), however my friend's dad just retired from petro-canada after over 30 years of service in the engineering dept. and he has shared some very useful facts and tips regarding 'clean gas' and how 'clean' it can get sometimes hence, i don't follow the recommended 5,000km interval, but still feel it's necessary to use.