Facts about trucks:

Engine differences with your car:

• A semi transportation truck engine is about 5 to 6 times larger than a regular car's engine both in size and in weight.
• A regular car produces about 100 to 200 Horsepower and around the 100 to 200 FT.LB. of torque, a semi truck will go produce about 600 horsepower and about 2000 FT.LB. of torque.
• While a car engine is designed to last about 150k to 200k miles a semi engine is designed to go over 1'000.000 miles before even an overhaul or rebuilt, and they are designed to run nonstop, they used to be shut down only for repairs or maintenance until states started adopting anti-idle laws to help the environment. 
• Your car takes about 4 quarts of oil, max 6 if you have a big SUV or Pick Up, a semi's motor holds about 15 gallons of oil.
• Your car has about 4-5 speeds, a semi has about 12 and up.
• A turbo charger is a standard component on a semi truck engine, not on a regular car.
• A semi truck's engine has an air-brake system to aid in the breaking process.