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I recommend replacing the 112 engine plugs at the recommended intervals if only to get them out before they can seize into the head. Yes, they are a standard looking plug (1 ground, not 2 or 4)
I believe the M111 plug is the Bosch F8DC4 "Super", which is what I would stay with.
On the 112 engine, several owners have commented that the engine seems to have better power after plug replacement at about 100K miles. The observed plug wear always does seem minimal on the 112 engines.
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