Our Ideal Vacuum Products brand oil IVP-175 can be used as our substitute for discontinued Leybold HE175 HE-175 vacuum pump oil. Our IVP-175 vacuum pump oil is quality mechanical vacuum pump oil for the ultimate performance of your vacuum pumps. Ideal Vacuum Products IVP 175 hydrocarbon oil is for Leybold Trivac A standard applications. IVP 175 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-175 vacuum pump oil can be mixed with or used as our substitute for Leybold HE175 (100% compatible with each other). This Oil is primarily for Older Model Oerlikon Lebold Trivac A series Vacuum Pumps.