There's a Top Gear episode that took an 80s era RHD Toyota Diesel pickup, beat the daylights out of it while driving it up and down stairways, etc. Then tied it to a boat ramp somewhere on either the North Sea or English Channel, let the tide bury it in sand and filled the engine with saltwater. Then they hired a Diesel mechanic to drain the saltwater and refill with oil and Diesel and got it running. It only took the mechanic about 1/2 hour to get it running.