[W126 Coupe] Anti Freeze Change Dilemma

[Michael de Holl]

I suspect its been 4 or 5 years or longer since the antifreeze has been change on my 1991 SEC. I have the car up on ramps, new MB antifreeze ready to add. My dilemma is I can't get the engine block drain plugs loose to properly drain all the fluid. If I'm reading the Service Manual correctly the location of the plugs correspond to a 6mm allen socket plug. I have the plugs drenched with liquid wrench. Any suggestion how to get these buggers out?
Thanks Mike
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.pairlist.net/pipermail/mbcoupes/attachments/20091022/cd8cbb9d/attachment.htm>