I am replacing all the timing mechanisms and cam phasers in a current engine build. There’s a build up of that seems to be a light grease. Should I do an engine oil flush with a product that cleans this with only a 10 to 15 minute run, or will Sea Foam Motor Treatment work better? Would it be OK to use Sea Foam now before I change the oil, then again and let it work for 3,000 miles? Please reply ASAP, as I will finish the reassemble tomorrow.