THE TURBOCHARGER

The turbocharger, commonly called a “turbo,” is operated by the energy contained in the exhaust gas. The exhaust gas spins a turbine inside the turbocharger at an extremely high speed (more than 100,000 rpm). That compresses the air/fuel mixture into the cylinders, which creates higher power output.

Because of the turbine’s rotational speed and the high temperature of the exhaust gas driving the turbo, proper cooling is needed to maintain durability. Engine oil plays a major role in lubricating and cooling the turbo, so following recommended oil change guidelines is important.

The Subaru Genuine Oil Filter, available at your Subaru dealer, is the only filter that Subaru has tested to meet requirements for filtration and flow.

ENGINE OIL AND OIL FILTER

Proper turbocharger lubrication requires high-quality engine oil. Some oil cannot provide enough lubrication performance or durability when used in turbocharged engines. Poor-quality oil or oil not designed for turbo engines may cause damage to the turbocharger and other engine components. Consequently, it is critical to follow Subaru vehicle owner’s and service manuals for recommended oil grade and viscosity.

A second key component of the lubrication system is the oil filter. The Subaru Genuine Oil Filter, available at your Subaru dealer, is the only filter that Subaru has tested to meet requirements for filtration and flow. Aftermarket oil filters may have different filtration performance and relief-valve opening pressures, which could affect filter and engine operation. Subaru Genuine Oil Filters help ensure optimum engine and turbocharger performance.

ENGINE OIL AND OIL FILTER REPLACEMENT INTERVAL

Due to heat generated by the turbocharger and carbon deposits contained in exhaust gas, the oil in a turbocharged engine will deteriorate faster than the oil in a naturally aspirated engine. Therefore, special care should be taken to use the proper grade oil and to monitor oil deterioration.
read more....