whats the diff btw this and techron and hitech synthetic cleaner

and ron 97 ron 100

all say clean clean clean

and a few ques to TS

1) how often many k km need to start do?
(for you)

2) the cheap engine oil u use to flush kopi O - fully synthetic or semi enough (since just to flush)

3) fuel economy better...so if I do this regularly per say 50k km, I dont need to pump ron 97 d? since economically this is much better than consistent ron 97 (also to clean engine)

4) If I dont wanna get my hands dirty, I do the first few steps (pour in engine oil hole and petrol tank) and let shop do the rest , which shop can do it?

This post has been edited by Jedi: Dec 20 2018, 11:50 PM