I have several '80's Mercedes with the OM617 IDI diesel, and also run a shop so I have a steady supply of used motor/transmission oil.
I don't want to compromise the cars' injection systems but it would pay for itself to invest in equipment to filter and clean the waste oil if it can be run, even blended, safely. Common opinion seems to be that
If I get the waste oil filtered to below 5 microns and free of water, etc., and blend it ~50/50 with pump diesel, will it still run a risk of shortening the life of the fuel system?
I don't want to compromise the cars' injection systems but it would pay for itself to invest in equipment to filter and clean the waste oil if it can be run, even blended, safely. Common opinion seems to be that
If I get the waste oil filtered to below 5 microns and free of water, etc., and blend it ~50/50 with pump diesel, will it still run a risk of shortening the life of the fuel system?