TestDriver
Registered User
Last night, I was cleaning a 5 gallon batch of my mix with the on-board centrifuge. Everything was going good till I had a minor (1-1.5gal) spill. The oil mix had started foaming faster than the air could come out of it and it foamed over the top of the container.
It did not happen at all when I previously cleaned 10 gallons of straight hydraulic oil. This mix has used motor oil (+-50%), veggie (+-30%), hydraulic (+-10%) and diesel (+-10%). Which of these could be responsible for the foaming? I know diesel foams quite well as I pump it out of the diesel pumps. But, the foam I got was very long lived. I pumped the rest (about 4 gallons) of it out of the circuit through the centrifuge into an open top 5 gallon pail. The foam was quite thick and lived for more than a couple of minutes after pumping. The resulting oil looks good a day after and I might just dump it into the tank. But, I want to know how to prevent this.
One more thing. The mix must have gone through the centrifuge about 4 times before the foaming over happened. I don't think it was necessary for it to go through so much but I thought I could let it go forever before deciding to take it out.
It did not happen at all when I previously cleaned 10 gallons of straight hydraulic oil. This mix has used motor oil (+-50%), veggie (+-30%), hydraulic (+-10%) and diesel (+-10%). Which of these could be responsible for the foaming? I know diesel foams quite well as I pump it out of the diesel pumps. But, the foam I got was very long lived. I pumped the rest (about 4 gallons) of it out of the circuit through the centrifuge into an open top 5 gallon pail. The foam was quite thick and lived for more than a couple of minutes after pumping. The resulting oil looks good a day after and I might just dump it into the tank. But, I want to know how to prevent this.
One more thing. The mix must have gone through the centrifuge about 4 times before the foaming over happened. I don't think it was necessary for it to go through so much but I thought I could let it go forever before deciding to take it out.