Like other vehicles, dirt bikes today produce more power from smaller engines. In many cases, only about a quart of oil is responsible for protecting against wear and the devastating effects of extreme heat. The oil must be up to the challenge for enthusiasts to get maximum performance and life from their dirt bikes.

Whether riding the trails near home or competing in sanctioned motocross races, riders’ motivation is the same: to get out in front of their peers or grab the holeshot and ride their way to a checkered flag. As such, riders are constantly on the throttle. Dirt bike engines rev as high as 10,000 rpm.

Summer Heat

Summer is peak riding season for dirt bikes and hot ambient temperatures combined with a high-revving engine create severe heat conditions that can reduce engine performance and shorten engine life. Heat causes metal engine components to expand. If the piston expands beyond normal tolerances, it can break the lubricant film separating it from the cylinder wall and rub directly against the metal, causing scuffing and wear. Eventually, the piston will fail and wreck the engine.

Motor oil is an enthusiast’s number one defense against piston scuffing and wear. The oil absorbs heat and allows it to dissipate into the atmosphere via the oil sump. It should also form a thick, resilient film on engine parts to prevent metal-to-metal contact. Oils detergents and dispersants must hold combustion by-products in suspension and prevent the by-products from forming harmful engine deposits that can lead to piston-ring sticking and power loss.

Is Your Oil Up to the Challenge?

Most dirt bikes, however, hold only about a quart of oil. A minimal amount of oil is asked to perform the daunting task of resisting extreme heat and wear in your expensive, powerful dirt bike engine. The oil had better be up to the challenge or else the engine can wear out and fail. This situation presents a great opportunity to highlight the performance of AMSOIL Synthetic Dirt Bike Oil.

Amsoil has identified the weak points of modern dirt bikes by working with professional supercross and motocross riders. Amsoil has validated the Synthetic Dirt Bike Oil on the track and in our mechanical lab.

The result is an advanced oil that delivers excellent protection against wear and extreme heat in high revving, powerful bikes. In addition, Amsoil designed the oil to provide confident clutch feel. Riders look for lubrican

ts that provide not only wear protection, but consistent clutch feel from the time the gate drops until they cross the finish line.

Amsoil Dirt Bike Oil:  (click on)                                                                                              

  • Delivers confidence in clutch feel
  • Superior protection against gear, bearing & piston wear
  • Maximizes horsepower
  • Helps extend clutch life

Oils that break down due to heat and stress lead to clutch slippage and sloppy, inconsistent clutch feel, reducing rider performance. Here, too, AMSOIL Synthetic Dirt Bike Oil proves superior, as the test results show.