Originally Posted by H-townbenzoboy

A few years ago, I heeded the warning of a MBCA Technical Article and placed a cheapo fuel filter on the vacuum line that runs from the main line to the yellow 3-way valve on my 82 300D. The purpose of the filter would be to catch oil from potential vacuum pump diaphragm failures early enough so that oil wouldn't get into the various vacuum powered accessories. Well, FFW a few years and a few forum searches later. I've determined that I need to install 3 more filters on the various vacuum lines under the hood. I would place them in the following locations.
1. On the vacuum line that branches off from the main line and runs straight to the transmission VCV (there is no branch-off to the EGR since I have my EGR permanently disabled).
2. On the line running from the "ignition switch" to the shutoff valve on the IP.
3. On the vent line that runs to the cabin (the filter in that location would keep dust and debris from getting into the system from the under dash environment).

So, what do you say, is adding the extra 3 filters a good idea, or is it just overkill from a guy who's just itching to do some sort of wrenching, albeit cheap and not at all time consuming. Hopefully this won't result in responses as inflammatory as those found in an oil thread.