Michael,


You shouldn't 'hijack' the thread from Serafim.
There is no problem starting your own, but I would answer this anyway.

An 18x6 prop is much too small for this engine! It is the minimal load for the 26 cc MVVS engine.

Use a minimum 18x10, 20x8 prop.


About oil; if it has a minimum rating of JASO FC, it is good enough to be used in any MVVS gas engine, regardless of which is the company that produces it.