[BusNit]

I have been working on removing 30 years of gunk from previous oil leaks that have finally been sealed up under my watch and expense. I am slowly working on making the underside clean and semi new again. My question is the service life of the brake chambers. I have type 30 brake chambers and they seem fairly cheap. Should I bother to replace them? I would do new hoses for good measure. My goals are to have the bottom side renewed to last another 30 years.