Try a little bit of biodiesel, if you can find some. It does a remarkable job of dissolving this kind of tar-like stuff (or really anything sticky -- even works great on pine pitch and other natural stuff) and it seems to be safe for interior materials. My wagon's PO had covered large areas of the interior door panels for years with duct tape after some of the door pull mounting points broke, and after I fixed those and removed the tape there was terrible residue left over - some biodiesel took it right off and the panels have held up great since.
Make sure you get pure biodiesel if you try this, though -- sometimes you'll find B20 (20% bio, 80% diesel) being sold as biodiesel, because it's a partial blend, but you'd regret using that because your interior will smell like diesel!
If you do find some B99 or B100 biodiesel that's accessible in your area, incidentally, you may also get good results from putting some in your fuel tank -- biodiesel can (temporarily) revive tired injection pump seals so that might be a way to slow down your leaks for a while until you spring for a reseal.
__________________
86 745 D24T/ZF 345k lifted 2.5"
83 764 D24T/M46 155k
|