What coolant is used for the m44?

[318istourer]

I've resolved a coolant leak that came from a silicone hose that wasn't tight enough round the radiator however it has now gone low, it's blue and I know this engine is an aluminium block so I would like to know what is the right coolant for this engine so i can top it up

Thanks

[MrBurgundy]

G48

[packratbimmer]

BMW blue

[TobyB]

Iron block, aluminum head. cast crank. roller rockers. and stuffs.

t

[82eye]

i moved all of ours over to the vw/audi/porsche pink stuff. it's cheaper than the blue, far easier to source, and is compatible. we have vw as well so it makes stocking the garage a lot easier.
bmw used to be listed on the product, but they didn't want to pay for the labeling and prefer to push the blue.

[packratbimmer]

The M44 is known for cooling system problems including head gasket issues. I would stick to the BMW Blue for that car just because I have had such amazing luck with the product for so long. I assume it is formulated for the materials used in our cars. If you are starting out with a new head gasket, you might save a $10 dollar bill per gallon on other formulas. You know about the plastic M44 fittings on the left side of the block and the rear side of the head I'm hoping - change them every 5-10 years as they are a ticking time bomb!

[318istourer]

From a quick search online is that m44 fitting this part by any chance?: (3-00540) Genuine BMW M44 Cylinder Head Coolant Fitting with o-ring (11531743679)