07-07-2013, 01:31 AM
Honda GN-4 oil is the least expensive oil that Honda has long offered (it has been around at least 20 years) for its wide range of motorcycles. It meets the minimum requirements that Honda dictates for the motorcycles it manufactures. There are numerous motorcycle oils that are better (including Honda HP4), and no doubt some that are worse. The best resource that I have found for learning more about motorcycle oils is here:
http://www.calsci.com/motorcycleinfo/Oils1.html
http://www.calsci.com/motorcycleinfo/Oils1.html
