Sae paper 2007-32-0079 by Brent Dohner of Lubrizol Corp. discusses the development FC-W, 4-Cycle water cooled Marine Engine oil. Many of the concerns about internal engine corrosion and wear protection seem to apply to classic automobile engines as well. These auto engines are somewhat like boat engines that are stored for long periods of time in humid environments but when they are driven, need extra wear protection with their slider camshaft followers. Does anyone have any recommendations about using this oil in older (without catalytic converters) vehicles?