I remember back in the 80`s I think it was, that coors was taking their used oil from the big rigs and running it through a series if filters.
If I remember right, they mixed it at a 5% ratio.
back then with fuel prices getting up the $1.00 range ,
well I don`t know where that went, but is most likely not being done today. with the epa etc...
but then it is being filtered by our fine German filters on the lower end
of the engine.
probably have to do an oil analysis to see what is in the oil, like anti freeze etc... then that would exceed the cost of a gallon of diesel any way.
charlie

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there were three HP ratings on the OM616...

1) Not much power
2) Even less power
3) Not nearly enough power!! 240D w/auto

Anyone that thinks a 240D is slow drives too fast.

80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff

We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works