thats good kung may tubig na lumalabas (make sure its tubig, not gas hehe) coz it means gumagana ang Cat ng kotse ... water is just condensation from the heat/oxygen mix, no CO2 coz nasusunog ng Cat ang CO2, so O2 lang ang lumalabas ...

as for the oil, try going for 15w and see kung may katok, if not then go for the 15w or 10w but not lower. tignan mo kung makakakuha ha ng Synth in 10w - 20w ... even kung 20w ang ilagay mo ulit, make sure Synth lang ok ... mas-stable ito sa vs. chamical changes dahil sa init