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oil additives

Engine

Vehicle Information: Model: 997; Year: 2004; Body Type: Coupe; Total Mileage: 1200;

In answer to the oil additive question many years ago a friend of mine, a top engineer with a major oil company, pointed out that the majors spent more money on research and development annually than the additives companies earned in gross sales each year and if there was a "magic component" out there they would have it tied up in a heartbeat. His advice "stick with one of the majors, change frequently and use good filters".

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