spray some penetrating oil in around the base and work it back in and out a few times. It will probably get easier.

You won't break the plug but in worse case you might bring along the aluminum threads, but you can heli coil them and not much will be lost.

As he said it needs to come out sooner or later anyway.

tom W

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.