Dear sir,
First know me what is the difference between cooking oil & vegetable oil
i think both are same? some said to me we have only used cooking oil & other said we have only used
vegetable oil. so i am confused pl clear my doubt???????

also know me first we heat the oil up to 150 F after how much time i have to add other chemicals in heated oil when temperature below 50 F am i right sir ?????? pl clear my doubt.

Used cooking oil and used vegetable oil are basically/likely the same thing, though some "cooking oil" may be animal fat (or lard or shortening or hydrogenated whatever) as well. The only difference between fat and oil is temperature.

The oil should be around 140-150 degrees when you add the methanol and caustic mixture.

No need to cross-post multiple times ( http://biodiesel.infopop.cc/ev...19605551/m/824105582 ).

Cheers, John

Oops, double post.