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Message: <blockquote data-quote="awyeah" data-source="post: 20380" data-attributes="member: 19607"><p>The radiator of my E36  is consuming a lot of water. Based on the age of the engine, I believe it is normal to consume more water, but this is quite much. I check and refill it almost weekly. Normally after a week the radiator is half or less than half. I need to check every week. I drive 400-500km weekly.There is no leak from the radiator and I don't see much rust in the water, meaning the radiator is in good condition from inside. The engine and air-con fans seem to be running fine. I put a non-boil coolant inside the radiator, still the radiator was half empty after a few days.Will it be better to use the original bmw coolant which is around RM20-RM30/bottle to solve this? Any suggestions? Also I think I might need to get the radiator expansion tank which is compulsory.</p></blockquote><p></p>