Hi Patrick,
I'm no expert! but I wouldn't on any account risk wrecking that beautiful
straight-six engine by driving it with no gasket on the oil drain plug, even
tho' it didn't leak the first time. (As has already been pointed out,
overtightening the washerless plug to try to prevent leaks can destroy the
threads of the soft aluminum oil pan.) I'd contact that incompetent
dealership and demand that they deliver to you the necessary aluminum
gasket..........post haste!
Good Luck.
Andy I. P.s. Don't use a copper gasket.......... not good to mix with
aluminum (a risk of "galvanic action").
