uses for used motor oil?

[Groo]

I would not use it to replace the average hyd oil. Some old eastern Europe tractors might be set up for such use.

In the old days you could filter the oil well and use it 1 to 10 or so in the fuel. Makes it smoke a little more. The new high-tolerance fuel delivery systems I'd be nervious messing up the spendy parts of the fuel pump and rail.

--->Paul

I'd be using it in old mechanical injected engines, not the new picky ones.

 

[rsewill]

Once worked at a place that had an underground fuel tank. I don't know how many gallons it held but all the old oil went in it and we never had a problem with the fuel that came out of it. I suspect any metals, etc. will settle into the water in the bottom of the fuel tank. It was a gravel hauling company so all the fuel that went into the trucks came from that tank.

I disposed of between 40 and 50 gals of waste oil this past fall. I wasn't at all tempted to put any of it in my Diesel cars. But if I had the same setup as the gravel hauling company I wouldn't hesitate to dump it in the fuel tank.

 

[Gary Fowler]

I use all my old motor and hydraulic oil on burn piles and also use it to coat the wood in the trailer deck. So far, I have been able to use most of it that way. I have in the past used it for termite preventative on wooden fences, but I no longer have any wood fences to contend with. I hear it also makes good yellow jacket nest killer. Diesel makes good wasp killer when used in a garden sprayer.
I wont be putting it in my diesel tank for sure. Even assuming that the fuel filter will catch all the gunk, I don't care to change the filters any more often than I have to and the cost of filters would negate some of your savings in fuel anyway.

 

[2950johndeere]

you can use a pint to every ten gallons of fuel and its fine ive done it for a long time on our tractors it lubicates the injector pump as the new fuels dont have much lubricity in them the older motors do good on it they will smoke a little but not realy enough to notice another benfit is it helps lube the valves and seats just remeber 1 pint to 10gallons of fuel

 

[Groo]

I use all my old motor and hydraulic oil on burn piles and also use it to coat the wood in the trailer deck. So far, I have been able to use most of it that way. I have in the past used it for termite preventative on wooden fences, but I no longer have any wood fences to contend with. I hear it also makes good yellow jacket nest killer. Diesel makes good wasp killer when used in a garden sprayer.
I wont be putting it in my diesel tank for sure. Even assuming that the fuel filter will catch all the gunk, I don't care to change the filters any more often than I have to and the cost of filters would negate some of your savings in fuel anyway.

seams like just 2 or 3 gallons would pay for a new filter with today's fuel prices.

 

[hosspuller]

I'm surprised it works well. Bar oil has "stickiness" additives in it.

My bar has outlived more than a dozen chains. I still have the spare bar hanging in the shop. Saw has an auto pump, with the waste oil, I can see the oil flung from the tip at high engine rpm's. I don't mind the oil, it's firewood after all. perhaps, without the "stickiness" the abrasive dirt is flushed away.

 

[tonyoz]

One of the best uses for old oil is as a timber stain, mixed with red oxide or other such colored powders can make fence post and rails look real smart. Reusing in any component is nothing short of being cent smart, dollar dumb.

 

[Gary Fowler]

My time used in buying filters, changing them, bleeding the system is worth much more than 2 or 3 gallons of fuel. If my company is willing to pay me $75 per hour for working, then my off time is for sure worth $100 an hour to me for which I can be doing other things rather than mechanic work. Heck my time is worth $50 to set on the couch and watch TV.
Sometimes saving a few dollars will cost you more in the long run even if not in money then in time. Time is something that you find more and more valuable as you grow older and older.

 

[Mark Page]

I use it in the shop's wood stove. Pour 1 cup at a time over the logs. I also burn all my oily rags and dirty filters.

 

[Jstpssng]

i used it for bar oil for a while, but it's nasty.
I bring mine to a local garage that has a waste oil burner for heat.