Quote:
Originally Posted by brow0814
This might be a dumb question— what is the significant difference between the BMW fluid and Prestone (green) and another orange/red anti-freeze?
Scott
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Using non bmw coolant can be corrosive to the OEM plastic coolant flanges and the internal passages of the engine due to the chemicals put in other colored coolants by non OEM manufacturers, if it’s bmw approved it will say so on the bottle but I’ve only ever used blue colored coolant, I bought my 1 series used and it was full of green coolant and I ended up flushing the coolant system and replacing the fluids with blue bmw coolant, the green coolant had already done its damage to my coolant flanges and hoses and needed to be replaced it disintegrated my coolant flange plastics to the point that upon removal it crumbled into pieces.