[stang300a]

alright im getting around 15 mpg and that is bad. i was getting 17-18 a couple months ago. i changed my oil 2 weeks ago (which is fully syn), fuel filter was changed 10,000 miles ago, cleaned air filter 2 weeks ago, cleaned maf like 1 month ago, the iac was cleaned 2-3 months ago, i checked the air pressure in all the tire two weeks ago too. i dont kno what else to do to get better gas mileage. it seems like all of sudden my car started getting crappy gas mileage. any recommendations? btw the weather got cooler here so i should be getting even better gas mileage but thats not happening.

[Onemanzu]

change your tune ?

seafoam in the gas tank?

[nba1341]

Originally Posted by Onemanzu seafoam in the gas tank?

are you saying this is something he should do or its bad if he has left over seafoam in his gas tank?

[bossman2kgt]

change your 02 sensors

[Avaric3]

02 sensors, or fuel filters, fuel injectors

is your cel light on?

[stang300a]

no my cel is not on and u think my 02 senors are bad with only 53k miles.

[Onemanzu]

its a number one suspect for poor gas milage... helped on my old fc3s ...

im saying put seafoam in the gas tank you would be amazed how much it can help after a simple stroll around the block

[bossman2kgt]

Originally Posted by stang300a no my cel is not on and u think my 02 senors are bad with only 53k miles.

Its just not as efficient.

[stang300a]

Originally Posted by Onemanzu its a number one suspect for poor gas milage... helped on my old fc3s ... im saying put seafoam in the gas tank you would be amazed how much it can help after a simple stroll around the block

how do i do that? like how much do i put in there and how much gas should be in the tank and will it mess anything up?

[nba1341]

how much will sea foam help because i honestly went 100 miles on 9 gallons of gas which is bull shit

[Onemanzu]

i put seafoam in about a week ago ... and im sitting at about 250 at a quarter tank left... its a little lower then normal but thats okay cause i also got so much increase in the smoothness of the engine... it accelerates and sounds better...

1 oz per gallon is the rule on that

[nba1341]

how much is it for a bottle and do they got it at pep boys? auto zone?

[Onemanzu]

they should ... i know they have it at walmart and the tractor supply store... they should have it at a mainly auto part store...

i think its either 16 oz or 13 oz something weird

[nba1341]

is this what makes that white smoke come out in the exact or is that people pouring it in their oil?

[Onemanzu]

the smoke is coming from the vacuum dealio... what happens there is the seafoam burning in the cylinder causes the seafoam to break up the carbon faster

[stang300a]

alright well ill fill my tank tomorrow and put 15ozs of seafoam in there and let u guys kno in a couple days if my gas milage has gone up. btw right now im at 1/4 tanks left and i have gone <140miles. which is crappy compared to before.

[stang300a]

actually i forgot to ask. should i do it when the gas is low in the tank or when its full??

[Averlus]

I'm having a similiar problem, except my ride is brand new. I have about 1,200 miles on it. I'm wondering if maybe I'm driving in the wrong power-band. I usually try to keep it in the 1,500 RPM range, and I drive in 5th gear as much as possible. Which is sometimes when I'm doing maybe 45-50 mph.

[Hourofpain]

decarbon yur intake and ijectors by running seafoam through your vac line.

replace the spark plugs.
clean your IAC
reset your adaptive memory
check your tire pressure

And get your codes read even if its something minor.

you dont always get a cel light

[Onemanzu]

you can put the stuff in right before you fill it so that way it can mix if you want or w.e it doesn't matter as long as it goes in ...

new car dude... don't be in 5th if you accelerating ... its not very helpful... but cruising in 5th is just fine