Oil Change at Roberts Auto Repair & Tyre (Up to 39% Off). Four Options Available.

Boulevard Forest

Value Discount You Save
$30 30% $9
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In a Nutshell

Professional auto techs replace old oil, ensuring that your vehicle runs smoothly and efficiently out on the road

The Fine Print

Promotional value expires 120 days after purchase. Amount paid never expires. Appointment required, same-day appointments accepted. Limit 1 per person, may buy 1 additional as gift. Valid only for option purchased. Additional charge may apply for foreign cars. May be repurchased every 30 days. Merchant is solely responsible to purchasers for the care and quality of the advertised goods and services.

Choice of:

  • Conventional Oil Change
  • Synthetic Oil Change (4-Cylinder)
  • Synthetic Oil Change (6-Cylinder)
  • Synthetic Oil Change (8-Cylinder)

Horsepower: An Estimate of Engines’ Energy

A fine-tuned engine performs at peak capacity, running smoothly and generating more horsepower. Read on to learn more about horsepower and what it means to work.

An engine that packs a lot of horsepower is an engine that is ready to work. The 18th-century engineer James Watt coined the term to help sell steam engines to mills and mining operations. Watt estimated that an average horse, per minute, could perform 33,000 foot-pounds of work—meaning it could pull 330 pounds a total distance of 100 feet. It was just a rough estimate, but Watt’s calculation has endured as an official unit for measuring engines’ work.

The Benefits of Horsepower

The Model T only had 20 horsepower, but modern cars have left Henry Ford’s creation in the dust. Popular cars, like the Camry or CR-V, house engines that provide 150+ horsepower, an ample amount for running errands and towing kids’ wagons behind them. High-performance luxury cars, meanwhile, boast more than 700 horsepower for more powerful acceleration, and trucks that need to carry heavy loads often fall within the 300–400 range.

Bonus Points

  • The unit could have just as easily been _pony_power, since Watt originally calculated that an average mine pony could do 22,000 foot-pounds of work. To arrive at horsepower, he simply increased that number by half.
  • Watt’s work on work was so influential that a fundamental unit of modern science bears his name.
  • Incidentally, the electrical equivalent of one horsepower is 746 watts, or roughly the same energy it takes to totally shred a Van Halen guitar solo.

Customer Reviews

Good service
Monica E. · December 28, 2016

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