Marvin stresses hospital clean. All it takes is one tiny stray piece of metal to finish off an engine in its first 100 miles. This is why Marvin scrubs and cleans all engine components two and three times to ensure cleanliness. Here, he chases oil galley passages in the Eagle crankshaft with plenty of soap and water. Once he is confident all debris is gone, he closely eyeballs each galley and bathes the crank in WD-40 to prevent corrosion.