Originally Posted by treetrimmer

Large ships are the #1 cause of Carbon Monoxide emissions into the earth's atmosphere, and the biggest current target for environmentalists right now, according to an oceanographer that I met with last week.

You can say that you don't give a schit, but the statement above about *not doing harm to the environment* is ignorant. If you want to add some needed lubricity to modern ULSD for older diesels, nothing is better than a clean biodiesel, (not WVO or SVO), and second place would be a very small amount of TC-W3 outboard motor oil, IMO.