Hello,
This question has probably been asked a gazillion times, but I could not find it on the forum.
I have a 1956 KHK which I just bought and took delivery of. I want to change all the oil fluids in it. I have the owner's manual and it says to use Harley "Regular Heavy" oil for the temperature that I normally ride in. I would prefer a more modern, preferably synthetic oil if that would be better. I run Rotella T 100% synthetic in my other vintage Harley and Indian bikes and in my 1981 Honda CBX1000 without issue, but I admit that I do not run any of my bikes hard. Just a Saturday morning run every once in a while to take the little woman out for breakfast and a not so often run to the monthly local swap meet.
Anyone have any suggestions as to the very best oil I should use?
Thanks