I have been using Spectro Golden American and don't hear any comments here. The engine gets V Syn 3 20W50, primary gets their oil which I think is 10W40, and Syn 75W140 gear oil in the tranny. How good is this oil compared to others? Thanks.

 

Sorry, I can honestly say, I've never heard of that brand.

 

Golden Spectro has been around a long time, and I used it in many of my bikes over the years. It's top-shelf oil, every bit as good as the other high-end synthetics on the market. I use Redline synthetics, but I'd have no reservations about using Golden Spectro if I couldn't get the Redline.
Spectro is a very good choice!