hmm... mixing? for me ... better not ... u know ... afraid of some chemical reaction... if I use esso 2t then after want to finish, I change to vsx then I think it is fine (cos not many chemical reaction will happen), but imagine : 50% VSX + 50% ESSO ... I dun dare to try ... Panadol is to cure headache, coca cola is nice... but try to eat panadol then drink the coke... rumors say, it is the fastest way to suicide... why? ... chemical reaction ...

If petrol, i think it is fine cos 95%+ of petrol from any brand uses the same benzyna (i dunno how to write in English, I know it is bensana in Indonesian, kind of Alkana, Alkuna, Alcohol, weak acid) So even though 50% esso petrol + 50% shell petrol, that will be fine for still thr 95% of that is benzyna.
Think about 2T, one got fully synthetic, one not fully, half, or dunno what. Noone know the base chemical substances. You mix them, there are some probabilities:
- The reaction give residue, it is like "salt" or "salt rock", then if it hantam your piston.. go overhaul.
- The reaction weaken one another. Have heard about people cures poison with poison? Same here, originally 2t, u mix ... then not 2t anymore ... (neutralized)
- Unexpected chemical substances, and the "gas" it produce can give toxin ... dangerous ... but it happened in places which doing oil refinery. The gas is poisonous cos mixed chemical here and there.
- Nothing happened ... and the bike is just like that ...
- Or your dream ... the bike become faster ... (I doubt though)
Maybe someone ask, then why everyday we eat orange, banana, rice, veggie, but got no chemical reaction? actually it happened ... but our body can handle them properly (with kind of enzym) ... and ... the temperature is not very hot... if your stomach is > 100 celcius ... then you may give poisonous residue (shit) or poisonous fart ...

just my thought
