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Interesting responses. And sorry that i didn't see the "Fuel and Fuel Additives" section scrolling a little further down. Probably should have posted it there. The reason why I asked is that my newly acquired 1995 Mazda Protege 1.5 DX, with 158k miles, only gets about 22 MPG, albeit I drive...

Ok, I know that I may get hammered for this, but I have searched the forum, as well as the internet, and can't find a good answer. Also, I am a noob and not a chemical expert. Do fuel additives like Techron concentrate really work? Or are they snake oil? If some of them work, which is the best...

Thanks for all the replies! Sorry I didn't post more info. The car has 158k miles. I use 10w30 because that is what the manual recommends. Thanks!

Hi Everyone! I am a new member learning my way around the forum. I know some basics about cars, but to the chemical technicalities of so many of these oils and fluids. Looking forward to learning something! I just bought and 1995 Mazda Protege as a winter beater, though it is still in great...