Black gold vacuum pump oil is an ISO 41, special to this type of application |
For use in any vacuum pump, black gold is extremely pure and non-detergent |
Black gold is hydro processed which means it goes through a series of catalytic steps rendering the oil extremely refined, more viscous and more stable |
Result is clear mineral oil which will alert to contamination sooner as it becomes cloudy or milky |
In extreme temperatures, the oil will be more resistant to contaminants |
Oil be changed after every evacuation for maximum performance and pump efficiency |
Best test to see oil is contaminated is through a micron gauge, with a leak free system |
Viscosity is a measure of the weight of the oil |
For industrial oil, the viscosity is an ISO grading at 40 deg C |
21 cSt at 104 deg F |