Here’s how to give your car a “blood test” and test the oil to see if there is anything wrong with the engine!I wanted to get a baseline for our “new” junkyard m54 BMW engine so after the race we know how the engine is doing. The vacuum container is the most amazing idea ever! Just run your car to operating temps, shut it off, take a sample, and put it in the mail!#ChrisFix #ZenginePartner #oilSample #BMW