Our Ideal Vacuum Products brand oil IVP-150 can be used as our substitute for discontinued Oerlikon Leybold HE150 HE-150 vacuum pump oil. Our IVP-150 vacuum pump oil is quality mechanical vacuum pump oil for the ultimate performance of your vacuum pumps. Ideal Vacuum Products IVP 150 hydrocarbon oil is for Leybold Trivac B, E, DK and Ruvac standard applications. IVP 150 is a durable oil with good lubrication qualities and low vapour pressure to prevent backstreaming. It is effective at normal operating temperature where cleanliness of the system is important. We recommend that you change your vacuum pump oil at least every 3 months to prolong the life of your vacuum pump. Ideal Vacuum Products IVP-150 vacuum pump oil can be mixed with or used as our substitute for Oerlikon Leybold HE150 (100% compatible with each other). This Oil is primarily for Oerlikon Lebold Trivac B, E, DK and Ruvac series Vacuum Pumps.