Methanol

Do not use gasolines containing methanol (methyl alcohol, wood alcohol). This practice can result in vehicle performance deterioration and can damage critical parts in the fuel system. Such damage may not be covered under the New Vehicle Limited Warranty.
See also:
Auto-brake
If a collision is imminent and the driver has not applied the brakes or begun
to steer around the vehicle or pedestrian, the auto-brake function is activated
without the driver pressing the brake ...
Warranty
As you'd expect, the Volvo S40 saloon is supported by a comprehensive
warranty. The standard mechanical warranty is three years/60,000 miles
(whichever comes first), plus there's a three-year, unl ...
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 vehicle,
lead has been strongly linked to ...
