8 years na yung radiator since nabili yung vehicle namin...
Nung nag drain kami wala ako nakikitang any rust or solid particles that came off...
visually wala rin scales dun sa passages sa loob...

I just used caltex coolant and petron coolant and distilled water... for 8 years... when we replaced the thermostat, there are no rust nor any particles on the metal tubes..

lately i've been using Baldwin BTA additives.. pang heavy duty application....


Coolant plus distilled water would be fine...
every year lang drain and replace para sure na meh active ingredients pa yung coolant..

the traditional coolant gets depleted overtime...

the newer "extended life coolant" with carboxylate inhibitors will allow the coolant to go at least 600,000 miles, 6,000 hours or 6 years before a coolant change.
carboxylate inhibitors in ELC deplete very slowly...

yung traditional kasing coolant, the additives get depleted easily, Nitrites, Molybdates Etc...

halos parehas lang naman offer nilang benefits
corrosion,scale,rust protection
prevent cavitation erosion

cooling sytem problems
scale---- deposits on high temperature area, resulting in uneven metal expansion, scuffing,snoring, ring wear, crack heads
solution- ----keep salt minerals in suspension so that they cannot deposit on engine metal surfaces or clog passages(coolant)

acidity---corrosion of iron, steel and aluminum parts
solution--- neutralize acids (coolant)

cavitation erosion---allows coolant to enter combustion chamber or crankcase
solution--- coat cylinder liners with thin oxide film to protect from erosion(coolant again)

aeration---air bubbles that increases the probability of an engine experiencing cavitation erosion
solution--- Coolant again with anti foam properties...

daming benefits ng coolant....
mura lang naman yan guys...
tapos once a year lang...
para iwas problems in the future..