Like I was saying earlier, the B&S engines I use corn oil in and they run fine the Tecumseh engines seems to overheat with corn oil.
Also, I got the idea of this because I found that they used to use fat oils in car motors back in Woorld War 1 and maybe World War 2. It's plausible I may can use it in my truck but I don't want to do so unless I have to.