Mastercool 90010-6 Vacuum Pump Oil – Professional-Grade, 10 oz Bottles (6 Pack) – High Viscosity Deep Vacuum Oil for HVAC and Automotive Systems with Dispensing Spout

Overview:Mastercool 90010-6 Deep Vacuum Pump Oil is a professional-grade lubricant packaged in six easy-to-pour 10 oz bottles. Designed for HVAC and automotive vacuum pumps, this oil delivers optimal viscosity, moisture resistance, and thermal stability. It’s engineered for technicians who service pumps frequently and need a clean, reliable solution for maintaining deep vacuum performance.Key Features:✔️ HIGH VISCOSITY FORMULATION – Maintains superior sealing and moisture control during deep vacuum operations✔️ THERMALLY STABLE – Withstands extreme operating temperatures and resists breakdown under pressure✔️ OPTIMIZED FOR FREQUENT MAINTENANCE – Perfect for routine oil changes to prevent acid buildup and pump wear✔️ CLEAR AND NON-DETERGENT – Leaves no residue or buildup inside the pump system for long-term reliability✔️ CASE PACK OF SIX – Convenient for bulk users and professional technicians✔️ U.S.-BASED QUALITY ASSURANCE – Backed by Mastercool’s industry expertise and dependable customer supportWhy Mastercool:Mastercool is a trusted name in HVAC and automotive tools, known for its innovation, quality, and U.S.-based service. Our vacuum pump oils are engineered to meet the highest standards of performance and reliability.Technical Specifications:Appearance: Clear, colorless to pale yellow or amber liquidBoiling Point: >300°C (572°F)Flash Point: 220°C (428°F)Vapor Pressure: <0.013 kPa (0.1 mmHg) at 20°CVapor Density: >1, heavier than airViscosity @ 40°C: 46 cSt ±10%Density @ 20°C: 0.86–0.87 g/cm³Pour Point: -18°C (0°F)

• ✔️ HIGH VISCOSITY FORMULATION – Designed for deep vacuum pump service to help maintain proper sealing and dependable pump performance during evacuation work
• ✔️ THERMALLY STABLE PERFORMANCE – Built to handle high operating temperatures and routine service conditions to support longer oil life and consistent vacuum pump operation
• ✔️ HELPS SUPPORT CLEANER EVACUATIONS – Fresh vacuum pump oil helps promote more efficient pulls by supporting proper pump operation during routine maintenance
• ✔️ IDEAL FOR ROUTINE PUMP MAINTENANCE – A practical choice for regular oil changes to help preserve pump performance and keep service equipment operating at its best
• ✔️ CLEAR OIL FOR EASY VISUAL CHECKS – Clear formula helps technicians monitor oil condition more easily through the sight glass during service and maintenance
• ✔️ CASE PACK OF SIX – Ideal for service trucks, shops, and field use where multiple pump services are required
• ✔️ U.S.-BASED QUALITY ASSURANCE – Backed by Mastercool’s industry expertise and dependable customer support