The mid saps has a lower percentage. The amount of sulfated ash and phosphorus is in relation to the amount of detergents, so the full saps=more detergents. The SAPS creates a cushion for the valve seats to extend valve life. Its very common for diesel oil as it helps keep the motor clean and helps prevent wear.
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Do your car and move up to Amsoil.
Last edited by beamertruck; 04-25-2014 at 01:28 PM.
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