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jzeiler4 · 10-30-2023, 05:46 PM

In 2020 or 2021 they switched at the factory from blue to green. My 21 M240 has the new green but I had blue left over and have used a small amount of it.

The larger reservoir is the engine coolant and the smaller one is for the intercooler.

10-30-2023, 05:46 PM	#4
jzeiler4 Lieutenant 322 Rep 538 Posts Drives: 2021 M240i xDrive vert Join Date: Aug 2020 Location: Hazel Green, AL iTrader: (0)	In 2020 or 2021 they switched at the factory from blue to green. My 21 M240 has the new green but I had blue left over and have used a small amount of it. The larger reservoir is the engine coolant and the smaller one is for the intercooler.
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