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A.S.A.P. Air Service and Parts, Inc. |
Determining Oil Condition |
COLOR: - Does not accurately predict oil condition SMELL: - Does not accurately predict oil condition VISCOSITY: - A significant increase could indicate oil failure - Synthetic oil viscosity does not increase as much as petroleum oil viscosity as is oxidizes - Diester and coolant oils viscosity do no tend to increase significantly with oxidation TOTAL ACID NUMBER (TAN): - Measures acid level in oil - Best method of determining oil condition |