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HeyBub[_3_]

wrote:
Use Stabil. It must be added to the gas when the gas is still fresh.
Nothing will revive old gas and the problems it causes. Do NOT use 92
octane gas in a lawn mower! Also skip the lead substitute if your
mower is newer than 1975.
What's wrong with 92 octane? Just make sure it is ethanol free.

Higher Octane = higher ignition temperature. It is called for to prevent
'knocking' in high-compression engines. Unless you have a high-performance,
high-compression engine (such as a race care or Lamborghini), higher Octane
ratings mean higher prices and nothing else.

A high-octane fuel does not contain more energy than a lower-octane
competitor, it only burns slower. For small engines (lawnmowers,
leaf-blowers, marital aids), a slow-burning (i.e., 90+ Octane) fuel is not
the fuel of choice.

For your car, on your next empty, put in five gallons of 87 Octane. If the
engine doesn't knock at higher speeds or when accelerating, you can
thereafter save $2.00 or more each fill-up.