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Still looks black before and after.

Water gets pumped out before filtering, usually don't have any. I figured cost is around 25 cents a gallon on electric cost, but that is an old number. It's probably less now that I have it tuned. Oil is free. I pick it up at a local factory, and I usually have to be in town anyways, so...

Had my first break down. Been running constantly for over a week, had to filter 300 gallons. Vibration got loud, so pulled the rotor thinking I had a bad bearing. Shaft was spinning inside the bearing, was .005 undersized. So I moved the shaft up a little, and put some Loctite on it. Much...

Just ran 160 gallons through. clean storage tank is full, time to drive the trucks some. Need to pick up 4 more barrels of oil. Working nice.

Another small update. Replaced the hot water element that was grounding out with a new one, and added a thermostat on both power wires to it. Trying to make it redundant so if a thermostat gets stuck on, I don't heat the oil up too much and catch on fire. Still need to add a overtemp switch...

Just a slight update. Filtered about 200 gallons so far. Still losing some temperture by the time the oil reaches the bowl, about 30 degrees. Need to up the barrel temp a little, it's about 160. Did find a copper float to get my float switch working, now I need a piece of 1/4 threaded rod...

Jeez, talk about a thread hi-jack. If you did not buy it from a gas station/fuel company, it is untaxed fuel. If somebody official looks or dips the tank, you get to pay the fine. Some claim you can call it an additive, since some states do not have a limit on how much additive can be in the...

Two heating oil tanks hold the finished oil. They are tilted so any water will settle out. I can jack them up to drain any crud out. The 55 drum seems to work well. Only problem is the oil is dropping to much in temperature by the time it gets through the centrifuge. Being 10 degrees out...

Unfortunately, I seem to have lost the pics of building the centrifuge. If you go to the simple centrifuge page, or wolverine tech page, you can get an idea of how to build the rotor. I used a large hydraulic cylinder sleeve for the outside, then welded in and machined the top/bottom on a...

Dave, that is GPH, not GPM. So 4 gallons, single pass, one hour. Pump is Meter-Flo pump, model number 540-800-111 CCW Driven about 6500 rpm with a 1/2hp motor. It is a pretty small pump, that's why I am running it so fast. Dead heads about 300psi with the 1/2hp motor. Not really the right...

GPH is around 4, depending on where I set the gate valve to the centrifuge. So at 40 gallons it takes about 10 hours for a batch. That's the main reason for the float switch to turn it off automatically. Last load I got a layer of silver gunk out of it, must have been some metal in that...

Pics of switches and tanks. 3rd pic is the drain and bucket for when the centrifuge turns off and drains the bowl. 4th pic is the pipes under the centrifuge for clean oil on the outside and dirty drain oil on the inside. Last pic is after insulating the heated tank.

See here for my previous setup. https://www.steelsoldiers.com/threads/stretchs-used-oil-centrifuge.10416/ Second version used new centrifuge and deuce air tank above it, old version pump and heater to pump oil through the air tank, and it would drain into the centrifuge. It was just so I...