marinetrader wrote:Does anyone know anymore about how this would work?
There is a lot of information available on this practice. Just Google "used lube oil blending diesel" and you will be delivered everything you want to know. This issue has been around for years so it is nothing new but modern testing and analysis techniques*have provided real answers rather than the shade tree stuff of the past.
DD specifically prohibits it but if your engine is not in warrany the sky probably won't fall down if you follow the practices referenced in the articles link below.
I think they come from fairly dependable sources but someone will surely argue otherwise.
Sorry about the* weird way the links paste, you might have to cut and paste into the URL bar of your browser to connect.