Quote:
Originally Posted by bowtieguy
ok, i'm gonna fill up on sat or sun. if that station still has race fuel, i'll test it 50/50 with 87 octane. any other warnings, please make it known.
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100 octane fuel isn't going to be leaded for the cost that is talked about.
Some of the 100 octane unleaded fuels are designed to be spec fuels. Often, they don't perform as well as even an E10 blended fuel. I used to sell racing fuel to racers and shops, and there was a shop I worked with that would cut some of the common unleaded fuels with unleaded pump street gas to develop more power. That was in a time when we were getting MTBE as an oxygenate in pump gas, and MTBE is also an oxygenate in oxygenated leaded and unleaded racing fuels.
Final trick about racing fuels is this: If it's coming out of an unsealed container, I won't use it. Transportation in different tanks, storage, etc. corrupts the fuel with what was in it prior and with contaminates, water, rust, etc. So, it's a crap shoot.
You don't want to use a leaded racing fuel in anything with a cat. It'll trash it in addition to plating the O2 sensor. Cat will get ruined far quicker.
Finally, how a fuel is built/combined is different from one brand to another. Octane can be developed from different combinations of chemicals. Not just the chemical, but even the order in which it is added. This affects specific gravity, which affects carbureted engines a lot more than fuel injected vehicles, Reid Vapor Pressure, the initial tune, final tune, and the end output. Yeah, one fuel of 110 octane can have more power than another manufacturer's 110 octane fuel in the same engine.
), but I suppose it probably has just as many detergents and things to decrease the volatility. Anyone know?
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