Make sure you don't have an air pocket. There is a 14mm bolt on top of the head where you can bleed.

I have started using Water Wetter product and have seen a significant lowering of engine temps.

Keep us posted.

Haasman

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'03 E320 Wagon-Sold
'95 E320 Wagon-Went to Ex
'93 190E 2.6-Wrecked
'91 300E-Went to Ex
'65 911 Coupe (#302580)