Volvo C70 Owner's Manual page 67

Fuel Formulations
Do not use gasoline that contains lead as a knock inhibitor, and do not
use lead additives. Besides damaging the exhaust emission control
systems on your car, lead has been strongly linked to certain forms of
cancer.
Many fuels contain benzene as a solvent. Unburned benzene has been
strongly linked to certain forms of cancer. If you live in an area where
you must fill your own gas tank, take precautions. These may include:
- standing upwind away from the filler nozzle while refueling
- refueling only at gas stations with vapor recovery systems that fully
seal the mouth of the filler neck during refueling
- wearing neoprene gloves while handling a fuel filler nozzle.
Use of Additives
With the exception of gas line antifreeze during winter months, do not
add solvents, thickeners, or other store-bought additives to your car's
fuel, cooling, or lubricating systems. Overuse may damage your engine,
and some of these additives contain organically volatile chemicals. Do
not needlessly expose yourself to these chemicals.
Carbon Monoxide – Important Warning
Carbon monoxide is a poisonous, colorless, and odorless gas. It is
present in all exhaust gases. If you ever smell exhaust fumes inside the
vehicle, make sure the passenger compartment is ventilated, and
immediately return the vehicle to your retailer for correction.
Gasoline containing alcohol and ethers
”Oxygenated fuels”
Alcohol — Ethanol
Ethers — MTBE
Fuel requirements
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