I recently bought a carbide scraper, it is simply amazing, just drag it on the surface and the gasket debris simply peels away with it. Finish off with a solvent cleanup, cuts time by as much as 10x.

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2012 BMW X5 (Beef + Granite suspension model)

1995 E300D - The original humming machine (consumed by Flood 2017)
2000 E320 - The evolution (consumed by flood 2017)