Redline 5w30 is built to quiet engines, stacked with ep/aw additives and polar base oil. But, first I would try ucl, maybe it will quiet the upper end. You could always use a much thicker checper oil as well and even first, keep in back of mind of it isn't satisfactory there isn't a group 3 in 30 weight oil that will quiet more then redline 5w30. I would generally start using redline before 75k miles, if not I'd try everything else first.