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i am just wondering...

a) when do we know we gotta use them in our car?
b) how often u used a bottle?
c) what brand is good for our car?
d) does it really make a difference?

feel free to chip in on this topic

thanks

 
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I use STP on the full tank just before an oil change. I heared it's best to use it just before you change your oil because some may leak past your piston rings and contamate your oil. Not sure how true that is but better safe than sorry. As for making a difference, on my 2001 civic I didn't notice anything different, on my old 90 accord I got an extra 70km/tank!!

 
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the reason i am asking is that my car is 2001 and has 56000km on it, i never put in a single bottle of the cleaner in the gas tank. lately, i feel the car is losing its fuel mileage so i am debating if i should use the injector cleaner or not.

i guess i just hop a bottle of Wynn's Fuel Injector Cleaner and see how it goes.

anyone else?

 
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Greased lightning made a big difference with mine, and you only use once a year. Chevron with techron doesn't work at all. I poured that stuff all the time and nothing.

 
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i guess i will pour a bottle of Wynn's Fuel Injector cleaner in my car tomorrow

 
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Yea...I use the STP fuel injection cleaner in the white bottle. Works great. Can't beat it for $3 dollars.

 
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I don't think I've ever used the fuel injecor cleaner....maybe I should

 
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the reason why i am asking is that i am getting sh!tty gas mileage the past 5 tanks and i am suspecting the injectors are dirty or clogged

 
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How many KM are you getting?

 
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Royal Purple + some good Lube for your next oil change would make a good difference!

 
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Amsoil 5W20 full synethetics since 30,000KM, Sunoco 87 always, auto, has 56,000KM now

i used to average 600km+ a tank easy but now i am getting 450 or 500km a tank.

 
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600km a tank ??? That's amazing ...

Ive been only getting 450km a tank lately also ... ( Sedan and Automatic )
But I do run A/C a lot but I dont think that does THAT much.

 
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My last tank was 625km on 39L of regular sunoco gas. My car is a 2001 sedan, manual, 75,000km. I mostly do highway with minimal traffic. I use the AC on lowest setting on the highway. I just started using Mobil 1 synthetic on my last oil change. The car was bought used early this year at 72000km. My girlfriend's 2001 Si gets about the same. It's manual as well, 44,000km. Get that thing checked because $0.85/liter is not helping your situation.

 
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One more thing, check the number km in relation to the number of liters that reads on the gas pump. Our fuel guages are crap. One time my gas light came on for 2 days, then went off for a day, then came back on. I still had 15 liters left in my tank when I finally fueled up the next day.

 
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gotta love honda quality eh?