%25 gas mix is fine, so if you drain it that's good enough. 1/4 tank? Fill it with diesel and some additive or 2 stroke oil
There have been people who say that the original owners manual for our cars says that you can run up to 25% gasoline in the diesel (in extreme cold weather for example). I have a copy of the manual and indeed it does say this, I can scan the page if you want. Though, the old diesel probably lubricated it better... Yeah, it's probably a good idea to put 2 stroke oil in it.
thanks for all the info, just torquing down the cvs at the moment. super rusty old fuel lines will need to be replaced, anyone run all rubber lines or is it better to run metal lines with rubber hose connections?
...BTW your Bieber avatar is awesome.-Malone