DeVille V8-4.6L VIN Y (1998)
Fuel: Description and Operation
Oxygenated Fuels and Additives
Sulfur Content
The sulfur content in fuel is also regulated to a certain standard. Premium grades of fuel generally have a lower sulfur content than the less expensive
blends. A high sulfur content can promote the formation of acidic compounds that could deteriorate engine oil and increase engine wear. It could also
produce excessive exhaust emissions or a rotten egg smell from the exhaust system.
Oxygenated Fuels and Alcohol Content
NOTICE: Do not use fuels containing methanol in order to prevent damage and corrosion to the fuel system.
Oxygenated fuels contain oxygen in their chemical structure. The advantages that oxygenated fuels offer are improved octane quality, better combustion,
and reduced carbon monoxide emissions. The most commonly used oxygenated fuels are ethanol (grain alcohol) and MTBE (Methyl Tertiary Butyl
Ether). Ethanol is acceptable if it does not exceed 10% by volume. MTBE is permitted up to 15% by volume.
