Great pump its a beast brought my air con system down to 30mmhg in no time atoll and the pump was very quiet its well made and very heavy/sturdy it comes with 2 bottles of vac pump oil and it only takes just under 1 to fill so you've got a drop for topping up and a bottle for a full oil change. Caution ?? do remove cap from exhaust vent its got a sticker on it can't miss it please don't do what I did once I'd filled with oil I wanted to test pump straight away and switched it on without removing the cap within a second the pressure blew the cap off and fired oil on the walls and ceiling of my kitchen needless to say I'll never make that mistake again