Synthetic oil in an older motorcycle?

I ride a 1984 honda magna 700 (wet clutch) and am considering switching to synthetic oil, thought I might try shell rotella-T, which is not a motorcycle specific oil. I am mainly considering this because the engine knocks until the oil gets warmed, about the first 5 minutes, and most of my rides aren't much longer than this. Anyone with experience riding with synthetic? Is this a good idea?Synthetic oil in an older motorcycle?
Rotella is for diesel engines. What grade of oil are you using now? A knock in the engine sounds very bad , like a big end bearing is worn and the slop only goes away when the metal has heated up and expanded. This is quite likely as you ride the bike with the engine cold all the time. How long between oil changes?





Use a 20W-50 at least. Do not use any oil that has friction modifiers or similar, as this will stuff your clutch.Synthetic oil in an older motorcycle?
Stick with motorcycle products.


I use synthetics exclusively, they have great wear protection and slickness. They definitely do not cushion, and/or deaden sounds the way petroleum does, so your engine will seem a little noisier not the other way around.