A) Gear oil
B) Gasoline
C) Water
D) Wine

A) Quieter operation
B) Improved efficiency
C) Increased friction and wear on gears leading to potential damage
D) Increased speed

A) Oil pump
B) Cooling fan
C) Bearing
D) Gear shaft

A) Blowing air
B) Using sand
C) Splash lubrication
D) Applying heat

A) Diesel fuel
B) Synthetic lubricants
C) Motor oil
D) Vegetable oil

A) Improved performance
B) Faster speed
C) Quieter operation
D) Increased wear, overheating, and potential damage to the gearbox

A) To increase the flow rate
B) To make the gearbox more colorful
C) To release a pleasant aroma
D) To allow for expansion and contraction of the lubricant due to temperature changes

A) To make the lubricant less effective
B) To enhance the lubricant's performance and protect the gearbox under various conditions
C) To change the color of the lubricant
D) To make the lubricant smell better

A) Mist lubrication
B) Splash lubrication
C) Force feed lubrication
D) Drip feed lubrication