I want to say that I watched several of your videos, and came across a video of you explaining how an engine is affected if the oil has not been changed. My situation is that I have a 2007 Ford Mustang that has not run since 2012, the tank is possibly voided of gas. My main concern is the oil that has been sitting there for all those years. What would I need to do to take out the oil and is there a possibility that it became sludge? And what damage could it do for the years of the fluid being stagnant? I know you explained it in a video but I would like a more in-depth response.