Thanks for the shout-out Ilya, but I haven't done it on mine yet. The M56 is parked up for the winter with intentions to address that starter and other projects.
Funny thing is that my starter issue had been intermittent yes, but as soon as I bought the OEM starter, never have I had any more click-no-start episodes.
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OP, with regards to the coolant, if I had to open the system, I'd take it as a good opportunity to do some preventive and routine maintenance:
1. Replace the coolant
2. Flush the heater core
3. Perhaps install a metal fitting in place of the OEM plastic Tee used as a bleeder.
I assume you're referring to the intake gaskets. If so...
When I bought mine, I ordered part # A4035-1MC0A and the kit came with 8 gaskets. It costs in the neighborhood of $40.
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