Hey, when you have a wife on the bike or a wife in a boat, the wife and whichever one she chooses is the sure bet! In the grand scheme we're going to agree to disagree on the precise rating down to the letter on which oils to choose from. I think you've even said Harley recommends an HDEO if you can't run the exact detail spec they name. Too many guys on many, many Harleys have run every oil under the sun and I haven't seen one have an issue yet. Anyway, this thread was about what oil to run in the primary and look where we took it.