Dry Sump oil system.....What exactly is that

[garickman]

As I have been trying to educate myself on dry sump oiling systems I have not found the answer to how often you must disassemble the oil tank and clean it. I noticed a few high end builders such as Mark Steilow, JCG and Ironworks have mounted the tank in the cowl shoulder on the passenger side. Since you would have to remove the hood and fender to get to these tanks and service them, would I be correct to assume that they don't need to be serviced very often?