Toyota Urban Cruiser Owner's Manual page 524

6-1. Specifications
 Fuel tank opening for unleaded gasoline (gasoline engine)
To help prevent incorrect fueling, your Toyota has a fuel tank opening that
only accommodates the special nozzle on unleaded fuel pumps.
 If you plan to drive in foreign countries (diesel engine)
Low sulfur diesel fuel may not be available, so please confirm the availability
with your distributor.
If your engine knocks

 Consult any authorized Toyota dealer or repairer, or another duly quali-
fied and equipped professional.
 You may occasionally notice light knocking for a short time while acceler-
ating or driving uphill. This is normal and there is no need for concern.
NOTICE
 Notice on fuel quality
 Do not use improper fuels. If improper fuels are used the engine will be
damaged.
 Gasoline engine: Do not use leaded gasoline.
Leaded gasoline can cause damage to your vehicle's three-way catalytic
converters causing the emission control system to malfunction.
Diesel engine: Do not use a fuel that contains more than 50 ppm of sulfur.

Use of such a high sulfur fuel may damage the engine.
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