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"What do you know about the oil in your car's engine? From the ads, you're led to believe the most exotic part of a Ferrari's engine is in the sump," writes Fast Fours and Rotaries (FFR) (July 1998), an Australian performance car journal.
FFR points out that the loss of viscosity suffered by the five oils was very rapid. "Under normal conditions it's suggested oil which loses viscosity this quickly would be subject to significant losses over 5000 mi. [8045 km]. Indeed, one would be suspect of the potential for increased wear over this period." ------------------------------------------------------------------------------------------------------------------------------------------------------ ------- Wear Metal Test Oils inhibit wear by inhibiting metal to metal contact of engine parts. To test each oil's ability to protect parts from contact and wear, FFR subjected each oil to a test of wear metal generation. Their test "indicates the size and number of wear particles for each oil. The higher the rating the greater number and size of wear particles," writes FFR . Amsoil Series 2000 Synthetic 20W-50 Racing Oil LOWEST WEAR METAL GENERATION
------------------------------------------------------------------------------------------------------------------------------------------------------ ------- Horsepower FFR averaged three runs per oil, noting power figures at 500 rpm increments between 3000 and 5000 rpm and noting peak power and torque. While the engine FFR used for testing was a large tolerance engine for which a 20W-50 grade oil is ideal, some of the oil manufacturers supplied 0W-30 grade oils for testing. The low grade viscosity oils delivered somewhat greater horsepower than the high grade oils did, but as FFR notes, "around 4000 rpm the power produced is very similar across the range and it's only really the top end where there are substantial differences. That said, the AMSOIL [20W-50], Castrol R [10W-60] and Mobil 5W-50 prove themselves very well." ------------------------------------------------------------------------------------------------------------------------------------------------------ ------
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