Dan16v, did you drill the hole with the oil pan on the engine or did you take it off ? It seem like a PIA to get the oil pan off the engine, also if I drill the hole with the oil pan on the engine is there any chance that some metal bits will get into the engine ?

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190E 3.0-24v (M104 980) turbo @ 0.8 bar
1/4 mile: 2.483 / 13.540 / 175.17 km/h (street tires)