Originally Posted by kalsc
So, to revive an old topic, if in the comments above, kerosene is said to run hotter and yet further down someone states keosene doesn't have the BTU's as diesel, which is it? Also, being that kerosene doesn't have the lubricity that diesel does, I have heard of people adding 2-stroke motorcycle oil to compensate, no problems, something like a 98percent to 2 percent (diesel to 2-stroke oil).
Diesel and kero are definitely not the same product. Kero and jet fuel are essentially the same product. Diesel is no. 2 fuel oil, and kero is no. 1 fuel oil.
If I'm not mistaken, it is the cetane rating that is much lower with kerosene. It is a bad idea to run straight kero in a diesel unless it's an emergency because of the substantially lower lubricity properties of it.