Nice car! I understand anything rust-free in PA is unusual.

For parts, I use this site for big-ticket items and the local parts stores for little stuff like filters and glow plugs.

On the injectors, is the leak where the injector goes into the head, or is it higher up?

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Whoever said there's nothing more expensive than a cheap Mercedes never had a cheap Jaguar.

83 300D Turbo with manual conversion, early W126 vented front rotors and H4 headlights 401,xxx miles
08 Suzuki GSX-R600 M4 Slip-on 26,xxx miles
88 Jaguar XJS V12 94,xxx miles. Work in progress.
99 Mazda Miata 183,xxx miles.