Vehicle Damage Warnings

1. Do not use leaded fuel in an engine for testing purposes. The lead used in fuels will permanently damage the catalytic converter by coating the active surfaces with lead deposits. If leaded fuel must be used in an emergency, the oxygen sensor and catalytic converter must be replaced.

2. Catalytic converter contains ceramic material. When working on exhaust system, handle catalytic converter with care. The ceramic body inside the converter is fragile.

3. Silicone spray will instantly render an oxygen sensor inoperative. Do not use silicone spray near an unprotected oxygen sensor. Do not use any type of silicone lubricant or sealant on engine parts such as injector seals, throttle plates, intake or exhaust manifold gaskets, etc. as the silicon is still harmful to the oxygen sensor after combustion.