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Break-In procedures for Motorcycle Engines.

The break-in of a new or rebuilt motorcycle engine should be taken very seriously. Well broken-in engines last longer, consume less fuel, and produce more power than poorly broken-in ones. When you consider the cost of a new motorcycle, it makes sense to protect that investment by performing the best break-in you can.

What is the best method for breaking in a new engine? Most manufacturers recommend a procedure for their new engines that can be found in the owner’s manual. For rebuilt or modified engines, or when a manufacturer’s procedure is not available Bel-Ray recommends the following procedure for street motorcycles. A similar procedure should be followed for off-road motorcycles and ATVs, but with shorter intervals between drainings (and while using Bel-Ray Thumper 4-Stroke Racing Motor Oil or one of the Bel-Ray ATV Motor oil products, respectively.) You are going to be wearing in metal-to-metal components, and this process removes tiny metal particles, suspending them in the oil. Oil is inexpensive compared to a motorcycle, and during the break-in of a new engine is the best time to use it liberally. The intention is to gradually break in the engine and drain the wear particles with the oil.

Start by using Bel-Ray EXL motor oil in the recommended viscosity grade and run the engine for 200 miles or 3 to 4 hours. Drain the oil and change the filter. Now add new Bel-Ray EXL motor oil in the engine and run the engine 1,000 miles, avoiding long periods of constant high speed operation like traveling long distance on an interstate highway. Now drain the oil, change the oil filter and change this time to Bel-Ray EXS Synthetic Superbike motor oil in the recommended viscosity grade. If you follow the above steps, you’ll know your engine has been broken-in as well as possible. Now go ride!