changing vac oil

[mastacheeser]

How often is everybody changing their vac oil?

Robinair says do it every time you use it, but that seems wasteful. I did just buy the 8 cfm pump so I was thinking of changing it every 2-3 times.

Before this I've never changed oil, but I was using a pos single stage pump then

 

[LittleDabbie]

When it looks dirty i change it.. maybe every 3-4 runs , Pick up gallons of lube oil of ebay for about 30$ and a gallon of mineral oil to just flush the system with for about 20$ locally..

I use my pump for other stuff as well so sometimes it gets changed a little more often. But mostly i just check the cloudiness of the oil if it looks dirty enuff i'll change it if im not feeling incredibly lazy.

 

[blazer]

Yup like littledabbie said every few uses should be good the oil used is a real dry oil so it tends to absorb moisture when to dirty they don't pull a vacuum as good or as fast when the oil is fresh good luck thats a nice pump 8cfm is big boy!

 

[noone88]

I've been using motor oil in my pumps for over a decade. I change it out when the oil changes color or if it becomes "runny" at room temp.