i used to have brownish water too from my radiator due to my cast iron block; all this while i was using water n didnt really bother cos i didnt have a problem;

but everytime i flush my radiator i see all the brownish water; it jst gets on my nerve; plus my engine is already 13 years old; i can imagine all the rust n etc builds up inside;

had a consultation from MR big boss with a Big baton; he recommended me to to buy a flush from those hardware store; it feels like lemon

so i had my radiator flush.

the AMOUNT of rush water came out sweat.gif i had to fill my radiator like 4-5 times b4 the water is clear man.. so.. tats ALOT of rush. n rush builds up n etc isnt good for the block or cooling

now i m using a Honda Coolant;
NOT all coolant is pre mix with water 50/50; but this honda coolant i m using; is straight out from the bottle n poured into the radiator

the rest; i guess its too thick; u gotta premix water urself.F