Add a device to your compact car that helps with your fuel economy. Get a little Mercury Topaz fuel treatment from AutoAnything. Your new Topaz fuel catalyst is a bolt-on unit to your fuel line that puts your fuel over some exclusive material which adds octane to your gas.
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This Mercury Topaz fuel enhancer makes your engine run smoother and gains up to 2 MPG in fuel economy. A breeze to install, our Topaz fuel octane booster uses standard quick-release fittings found on today's fuel systems. In a nutshell-you can use lower-octane fuel in your car and get premium gas performance with our Mercury accessories.