Disposal of used oil.

[a64pilot]

Yes if you really want to make an environmental issue work, find a way for it to work economically.

[martingaf]

I have used 10% waste oil cut with diesel run through a 30 micron (Agricultural tractor filter) followed by a 10 micron (Racor) then a 2 micron (Marine) filter on my boat.
I run even fresh diesel through the 30 micron before it gets into my tanks. Lotsa "crud" in 3rd world diesel ! I add a half pint of methyl alcohol to each 65 gallon tank plus an ounce of Biocide. Engine is a 4D 61 Lehman Peugeot (2112 Indenor), runs sweet as a nut.
Filters don't last as long and don't run 140 EP gear oil in the "mix" it makes the eyes of following skippers run a lot and is hard to explain to them !

[FlyingCloud1937]

Have a read over here. Re: Who uses Waste engine Oil? These guys are a great bunch of DIY'ers. There are multiple discussions on using WMO, WVO VVO, how to use it, how to build centrifuges, how to filter, and cut with RUG, and Dino.

Lloyd

Originally Posted by ti325v

This may seem crazy but....
I live on a small island and there are no facilities for safely disposing of used oil. I am not comfortable just dumping it on the ground as is the norm here
I have my beloved old Yanmar, and was wondering if it would be damaged by mixing this used oil into the fuel.
This is a mix of used used motor oil, high quality breathing air compressor synthetic oil, and all of the oil from the boat oil changes.
The accumulation is starting to grow and I guess I could just burn it, or burn it in boat.
Thoughts ? Thanks

[Tantalus]

Isn't there a business or industry somewhere on the island which requires heat or hot water? Garages have been using old oil to fuel furnaces for years.