grumpy wrote:A lot of people add TCW3 oil to the diesel, it helps lub so they say..
You would be much better off using a real diesel treatment. TCW3 does have lubrication benefits, but not any more than a good fuel treatment, which also has the benefit of detergency, anti-corrision, and sometimes a small cetane boost. Power Service "white bottle" is one of the most common, and easy to find.
My brother recently got some diesel treatment from me and gave his dozer a "hot dose" to prevent fuel gelling problems in the cold weather. He added the treatment, filled the tank, and used the dozer all day - the next morning when he started the engine it blew chunks of carbon all over the hood, almost like coal dust.