One of the viable suggestions that I received for a temporary cure to the
suction killing my gas tank was to install a vented gas cap.

I disassembled the locking cap that came with the GL, and there is no vent,
and no easy way to make it vented (I decided not to drill through into the
lock tumbler space - I really don't want the fumes in there).

Where can I get a vented cap that will fit a '90 GL filler?

bcnu - Grungy    '61 dddPanel '68,'69 Bugs '90 Vanagon '93 Eurovan
grungy@mindless.com             .opinions are just that.obviously.