Somewhat newbie sailor here.We have just pulled the 40 gallon diesel
tank out of our 1971 Challenger 32'. This boat
was dry docked with a full tank but it has been there for 8 years. There is crud on the bottom of the tank and a good layer of rust buildup,but nothing too crazy. I am dealing with a bout a 3 inch opening.I intend to start with a pressure washer and move from there. Is there any product that would help me along the way? Should I coat the inside with something when I'm done?
I appreciate any tips, past experience or recommendations you can provide.