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Another weak area of this engine package is the oil inlet fitting near the oil pan. The only thing sealing the fitting and the block is an O-ring that's part of the oil-pan gasket, and it can be easy to torque this fitting enough to cause an oil leak, especially if the member of the race crew isn't careful not to over tighten the fitting. A leak here can allow air bubbles into the system which can severely damage the bearings. Our solution has been to cap off the fitting, tap into the block itself and install our new fitting. It may or may not be legal, we haven't asked, but we feel the change was necessary to protect our customers.