I am looking for the best oil options for my new hot rod. The bike is a 1982 GS1100E. The prev owner just did an oil change with Valvoline 10w-40 motorcycle specific dino oil. I have never had a bike with an inline 4 engine before. It has a Stage 3 kit, K&N pods and V&H 4 into 1 pipe. I am thinking that there are more attractive options for me than the 10w-40 recommended in 1982. How about Delvac 1? I will keep OCI to 2,000 miles or less with a filter change annualy (4k miles). I am also considering returning her to the stock setup. TIA!