Mazda MX-6 Forum banner

1 - 6 of 6 Posts

·
Registered
Joined
·
1,434 Posts
Discussion Starter #1
i got this cheap 50 cent red bottle of fuel something or other at kmart that said it would help gas mileage. I should have kept the bottle to remember what kind it was cuz it really worked. With my more "aggressive" driving i usually only get like 20miles per gallon and i tossed this stuff in when i filled my tank and now im up to 23mpg. What makes this stuff work?
 

·
Registered
Joined
·
1,640 Posts
I'm guessing it just cleaned up your injectors a bit and raised the octane maybe 1 point.

If you want some "addictives" get some Tuelene (paint thinner) and add about 30% into your mixture. All the stuff they sell is just Tuelene with some "addictives." It will raise your octane quite a bit and clean up your system nicely too.

Don't know how it can raise your mileage by 3mpg though. Maybe you just had some serious fuelclogging somewhere and it happen to free it up a bit.
 

·
Registered
Joined
·
2,942 Posts
I was surprised while reading my new Accord manual/owners guide when they said no Honda's should EVER have ANY additives! They said right in the book right from Honda that best case they do no harm and worst case they void your warrenty and wreck your Honda. They went to blather about how the i4's in particular are so finely tuned by Honda expert engineers that the balance of the engine can be upset by 'over the counter crap'.....

Just interesting, i assumed they wouldn't want anything added to the oil, coolent, or tranny but the GAS! Thought it was kind of harmless. But they explicitly had gas additives on their forbidden list...

Claeren.
 

·
Premium Member
Joined
·
3,023 Posts
Ooh! Ooh! Pick me! Pick me!!

OK, here we go.... Since I was this close to buying a motor with a 13:1 compression ratio for my Olds, I got to do a LOT of homework on fuel additives, ESPECIALLY the octane boosters. I will set forth my considerable findings now, some of which most of us already knew, some of which we didn't....

First: For those who don't already know, using premium fuel on a car that doesn't specificly ask for it is a waste of money, and does more harm than good. The reason is very simple: Octane has nothing to do with a fuels quality or power potential, it's a rating of a fuels burn resistance. The higher the octane, the HARDER it is to ignite the fuel. Thus, a car with a normal compression ratio of under 10:1 and no boost gains NOTHING from using this fuel, unless you have an aftermarket chip that advances the spark to a frightening degree. Using higher octane fuel in an engine that doesn't need it will result in LESS power, and WORSE fuel economy.

Second: Octane boosters are, for the most part, a sham. I have read numerous independant tests, and the results are all the same - products that claim to increase octane ratings "4 to 7 points" actually raise the true octane .4 to .7. Yup, less than one point when used in the recomended dosage. Enough perhaps to eliminate knock in a finicky engine on a temporary basis, but not enough to do crap for a high performance, high boost or high compression engine. The BEST octane boosters tested managed just over 1.5 points of actual octane increase. Conclusion: If you really do need octane higher than what most pumps sell, find a spot that offers unleaded 100 octane (usually between $3.00 and $4.00 a gallon) at the pump, find a VP Racing Fuels dealer (they have several offerings ranging from 96 to 103 octane available in 1, 2, 5, 12, 16, 36, and 55 gallon containers), or mix your own, using tuelene or similar additives to get what you want - but you need to do a lot of homework to do this right.

Other stuff: Various other additives claim to do other things ranging from increasing mileage to cleaning different parts of your motor. There are always tradeoffs; stuff that effectively cleans hardcore deposits from the combustion chambers and injectors is also TERRIBLE for various sensors and downstream components, use it RARELY (read, every 50,000 miles at MOST, only when needed). Mileage increasers have a number of ways to accomplish their goals, one of the more common is to include a chemical that tricks sensors into thinking there's more fuel in the mix than there is, making it run leaner. NOT a good idea if you drive your car hard!

Hope this helped.... :)
 

·
Registered
Joined
·
2,942 Posts
Interesting.... kind of regret wasting so much money on crap for my MX-6 all these years....

Claeren.
 

·
Registered
Joined
·
1,640 Posts
Claeren said:
Interesting.... kind of regret wasting so much money on crap for my MX-6 all these years....

Claeren.
Better than buying dozens and dozens of Lobster Tacos from Rubio's.
 
1 - 6 of 6 Posts
Top