Gary is right. Don't drive any more than absolutely necessary and try multiple complete drains and refills.

Regarding the hoses and the T-stat, I would at least do the T-stat and the radiator (which caused the problem in the first place).

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)