ASTM D3607 Test Method for Removing Volatile Contaminants from Used Engine Oils
ASTM D3607 Standard Test Method for Removing Volatile Contaminants from Used Engine Oils by Stripping
1. Scope
1.1 This test method covers a standardized procedure for removing volatile materials such as gasoline and water from used engine oils prior to further oil analysis.

1.2 It also provides an estimate of such volatiles in used engine oils.

1.3 When an accurate value of the gasoline contaminant is required either Test Methods D322 or D3525 shall be used.

NOTE 1 - Test Method D322 determines the amount of gasoline by distillation with water. Test Method D3525 determines the amount of material boiling below the boiling point of n-tetradecane by gas chromatography.

NOTE 2 - When the amount of gasoline is required to be known, the user of this test method is advised to determine which method is to be used. There are cases where D 3525 may be set as the referee method.

1.4 The values stated in SI units are to be regarded as the standard. The values in parentheses are for information only.

1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to consult and establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For specific precautionary statement, see 6.1 and 8.5.

2. Referenced Documents
2.1 ASTM Standards:
D322 Test Method for Gasoline Diluent in Used Gasoline Engine Oils by Distillation
D445 Test Method for Kinematic Viscosity of Transparent and Opaque Liquids (the Calculation of Dynamic Viscosity)
D3525 Test Method for Gasoline Diluent in Used Gasoline Engine Oils by Gas Chromatography
D4057 Practice for Manual Sampling of Petroleum and Petroleum Products
D4175 Terminology Relating to Petroleum, Petroleum Products, and Lubricants
D4177 Practice for Automatic Sampling of Petroleum and Petroleum Products
E 1 Specification for ASTM Thermometers

3. Terminology
3.1 Definitions:
3.1.1 stripping, n - the process whereby volatile fractions are removed from a liquid material.
3.1.1.1 Discussion - In this test method, lighter components such as water and gasoline are removed by the application of heat while passing an inert gas through the liquid.

3.1.2 used oil, n - any oil that has been in a piece of equipment (for example, an engine, gearbox, transformer, or turbine) whether operated or not.
3.1.2.1 Discussion - This test method refers specifically to used lubricating oils from gasoline engines.