I cannot speak to the potential functionality of your oil pipe. But as to alternate routes of administration, have you looked to enhanced leaf or changa?

From this page: Changa - DMT-Nexus Wiki -

"Changa is a lot easier to use than freebase DMT, and can be smoked through an ordinary pipe or water pipe. This is especially important, as DMT freebase can be typically difficult to vaporise on its own."