JB Industries Bottle of Black Gold Vacuum Pump Oil , 1 quart Description 12-quart bottles of Black Gold Vacuum Pump Oil. Black Gold Vacuum Pump Oil is the gold standard in vacuum pump care. For use in any vacuum pump, Black Gold is extremely pure and non-detergent. Our Black Gold is hydro processed, meaning it goes through a series of catalytic steps rendering the oil extremely refined, more viscous, and more stable. The result is clear mineral oil which will alert you to contamination sooner as it becomes cloudy or milky. In extreme temperatures, the oil will be more resistant to contaminants. We still recommend, however, that the oil be changed after every evacuation for maximum performance and pump efficiency. Features: The best test to see if your oil is contaminated is through a micron gauge. Viscosity is a measure of the weight of the oil. Black Gold vacuum pump oil is an ISO 41, special to this type of application. Product Details: Brand: JB Industries Package Information: Bottle Liquid Volume: 1 Quarts Item Weight: 2 Pounds Manufacturer: ‎Standard Plumbing Supply Part Number: ‎DVO-12 Item Weight: ‎2 pounds Product Dimensions: ‎4 x 2 x 5 inches Item model number: ‎GIDDS-2463008 Is Discontinued By Manufacturer: ‎No Size: ‎1 quart Color: ‎Black Item Package Quantity: ‎1 Batteries Included?: ‎No Batteries Required?: ‎No Date First Available: August 18, 2010