QUOTE(speedy3210 @ Jan 8 2018, 11:29 AM)
clear sign you should change your mechanic to someone better.
i have been using coolant within recommended mixing ratio for the past 18years and counting, on my wira 1.6 which is infamous for TB problem. I get NONE of that problem and still on my factory TB. I made it a point to change my coolant every 40k km or max 2yrs. Been using ori toyota LLC aka red coolant that need to be diluted upon usage since 2001. now covered 390k km.
Haha... i'm using Honda but coolant is also Toyota LLC.
I found that i don't need to follow the mixing ratio to get the most important benefit, i.e rust protection (we don't have winter, so the anti freeze to me not important). I use 1 or 2 bottles and the rest mix with tap water.
QUOTE(boland89 @ Jan 8 2018, 02:02 PM)
fully coolant or mix with tap water. my mechanic also not recomend to use coolant. donno why. my car is iswara 97'
Mine is mix with tap water as per above. Most mechanic don't go for automotive engineering courses, they just base on experience and what
their sifu last time teach them even thought it might be wrong.
Maybe you should ask for an explanation from the mechanic why manufacturer uses coolant, and every other car uses coolant, but Iswara no need.
See if his explanation is logical, base on experience or based on stories he heard.