Portable Fuel Containers - Porsche 2006 Cayman Owner's Manual

Fuels containing MMT
Some North American fuels contain an octane en-
hancing additive called methylcyclopentadienyl
manganese tricarbonyl (MMT).
If such fuels are used, your emission control sys-
tem performance may be negatively affected.
The check engine warning light on your instrument
panel may turn on.
If this occurs, Porsche recommends you stop us-
ing fuels containing MMT.

Portable Fuel Containers

Danger!
Portable fuel containers, full or partially
empty, may leak causing an explosion, or re-
sult in fire in case of an accident.
f Never carry additional fuel in portable contain-
ers in your vehicle.
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Maintenance, Car Care