Question

to use m85/e85 in a vehicle, the vehicle must have which of the following?

○ a. a separate fuel tank and fuel pump
○ b. a water detection sensor
○ c. a fuel composition sensor
○ d. a supercharger or turbocharger

Explanation:

M85 (a blend of methanol and gasoline) and E85 (a blend of ethanol and gasoline) are alternative fuels. Vehicles using these fuels need to detect the fuel composition to adjust engine parameters like fuel - air ratio. A fuel composition sensor is essential for this adjustment. A separate fuel tank and pump (a) is not a must as some flexible - fuel vehicles can handle multiple fuels in one tank. A water detection sensor (b) is not specific to M85/E85 use. A supercharger or turbocharger (d) is related to engine forced induction and not a requirement for using M85/E85.

Answer:

C. A fuel composition sensor