Lower Gas Mileage than Previous Times.

[Jaygo333]

Just want to know, does anybody know what it means when you put in a full tank of gas and get 120 miles only.

About 2 month ago, a full tank got me somewhere around 300 miles, haven't done anything except change a tire.

The sensor tells me 120 miles and given that on half a tank I calculated I go 58 miles, that sounds about right.

Ohh ya, since about 4 months ago, everytime I get gas, I put in one of these.
Upper Cylinder Lube & Injector Cleaner

Been adding it to my tank everytime I am at the gas getting gas.
Right after getting gas, I add in a bottle.

So, What can cause this sudden shift in Gas Mileage?

[Moberg12]

cause everywhere you get gas you get crappy E10, which uses more fuel to make than it replaces, causes FI problems, and burns faster. Ethanol FTL.

Or you are running really rich, check your O2 sensor.

[Edev]

cause everywhere you get gas you get crappy E10, which uses more fuel to make than it replaces, causes FI problems, and burns faster. Ethanol FTL.

Or you are running really rich, check your O2 sensor.

i LOVE your sig. ive been thinking about getting an e36...325is. but everytime i drive my e30, it pulls me back in..literally :D

and yeah..check your o2 sensor. mine is completely shitty. but im thinking its the original..327,xxx miles will do that to yours..hha.

[T Verdier]

seafoam FTW!

my friend who is a mechanic said everyone is coming to him telling him they are getting bad gas millage. he also said they changed the gas to cheapen it.

[T Verdier]

if your coolant temp sensor is bad your mpg goes way down sometimes. is it runing colder than usual?

[Edev]

seafoam FTW!

my friend who is a mechanic said everyone is coming to him telling him they are getting bad gas millage. he also said they changed the gas to cheapen it.

so i should use seafoam first to see if it improves my mpgs? ive heard a few negative effects of using it?

[E30_fiend]

The only negative effect I've heard from seafoam is on high mileage cars. If the intake system is really clogged, the seafoam could dislodge something large enough to impede flow somewhere. Other than that I have heard nothing but good things about seafoam. I do it to my car an my buddy's cars as well. They all love it. My buddy had his check engine light pop on but after driving for a while, it turned off.

I'd say yet it, it will be a good 8 bucks spent.

If you need help or instructions on adding the seafoam, shoot me a PM.






Taylor

[Jaygo333]

cause everywhere you get gas you get crappy E10, which uses more fuel to make than it replaces, causes FI problems, and burns faster. Ethanol FTL.

Or you are running really rich, check your O2 sensor.

Ok, first what is F1?
Secondly,. what's the E10 thing?

New to cars don't hate plz.

[Jaygo333]

Ohh ya, and what does riding heavy mean?

[SpecM]

Ok, first what is F1?
Secondly,. what's the E10 thing?

New to cars don't hate plz.

-That's "FI", fuel injection
-E10 is gas that is 10% ethyl alcohol
-"riding heavy?" running rich? just means too much gas is being used per unit of air