Do a search! Do not add Diesel Purge to the tank!. This is a waste. It is meant to run straigt from the can or a jar. So you need to unhook the supply and return lines and run them into a can of Diesel Purge. This way you are running all of it through at full strength and allowing it to do its job.

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Alan Hamm
'87 300SDL 277K Miles
'89 560 SL 68K Miles