I noticed that a local gas station here in my home town of Lincoln, NE. Sells 100 Octane Racing Fuel.

Is it ok to use in my car? Or will it do damage? thanks

If it say Un-Leaded it's ok.

The cheap way to make race gas is just add some tetraethyl lead and a sticker that says 'Off Road Only'.

Just two or three tankfulls of high lead fuel will take out your primary O2 sensor ($600) and your catalytic convertor ($1600)

It will just damage your wallet not your car.

You do know there is no advantage or additional power to be made running anything higher than 91 octane in a stock (or even mildly ported) RX-8? No additional BTUs, no additional power.

If it say Un-Leaded it's ok.

The cheap way to make race gas is just add some tetraethyl lead and a sticker that says 'Off Road Only'.

Just two or three tankfulls of high lead fuel will take out your primary O2 sensor ($600) and your catalytic convertor ($1600)

Front O2 Sensor dont cost 600 ... :P

Anywayz, yeah ... racing fuels not worth it ...

It will just damage your wallet not your car.

You do know there is no advantage or additional power to be made running anything higher than 91 octane in a stock (or even mildly ported) RX-8? No additional BTUs, no additional power.

In some cases there's negatives in economy due to these fuels having less energy than 91 as well!

100 Octane Fuel is used in Greece. However, it is expensive and most of the people chose 95 Octane Fuel. However, 100 Octane Fuel will protect your motor against knocking special in high ambient temps.

Front O2 Sensor dont cost 600 ... :P

Obviously, the part is only $239 - but -

Poison the front sensor with leaded fuel.
Take to dealer whining that 'it won't run anymore'.
After dealer analyzes, diagnoses, orders and installs the new sensor
Come back here and show us how much change is left from from that $600........

100 Octane Fuel is used in Greece. However, it is expensive and most of the people chose 95 Octane Fuel. However, 100 Octane Fuel will protect your motor against knocking special in high ambient temps.

Europe uses a different rating than the USA. Europe's 100 is similar to our 91-92.

In most countries (including all of Europe and Australia) the "headline" octane rating, shown on the pump, is the RON, but in the United States, Canada and some other countries the headline number is the average of the RON and the MON.

Most European pumps deliver 95 (RON) as "unleaded", equivalent to 87-89 US (R+M)/2, and some even deliver 98 (RON) (91 US), 100 (RON) (92 US), or 102 (RON).

And again for the OP:
A common misconception is that power output or fuel mileage can be improved by burning higher octane fuel than a particular engine was designed for. The power output of an engine depends in part on the energy density of its fuel, but similar fuels with different octane ratings have similar density. Since switching to a higher octane fuel does not add any more hydrocarbon content or oxygen, the engine cannot produce more power.

Do not use 100 octane gas unless your car is tuned for it. Good way to say bye bye to your motor

Dont know about race fuel but when I put that new shell gas in wow! my 8 loves it.