Hi,
thank you for your replies.

What do you mean, fatty? S-engines have swirl compustion chamber; ZS-engines direct injection.

I can get many WVO for free but should I "burn" the filtered WVO in the engine? I don't want to clean so often the combustion chamber, piston, etc..
The engine won't be have many cold starts. We need it to produce power and heat around the clock.

Here's a picture of mine:
http://upload.vs249020.vserver.de/files/989b858b023cc6bcb266687cb348151e.jpg


Sorry for my bad English, I'm only 16 years old and I'm not very good in it. 

Best greetings,
Michael

Hi,

Can anyone tell me what that circled thing in the picture is?
The engine is a 21KW direct injection changfa style engine.

http://upload.vs249020.vserver.de/files/9b1ad81adffbb9521911b8397563d922.jpg

I hope someone can help me.

Best greetings from Germany,
Michael