I just bought 3 L of Bel Ray HR1 @ 21.00 bucks each. Currently I cant cant ride when ever I want to, so my banshee sits a lot. I havent rode it in 8months. I normally run klotz supertechniplate, but the caser oil in it gets gummy when it sits and dries out. There is no problem with the fuel in the tank but when the carb bowls dry out that is where it starts to get gummy. I took the carbs appart a week ago since it sat for 8 months. They were clean, with a little stabil left in the bowl. I just had a pilot jets partly pluged. Sitting that long it can happen with about any oil, but I though I would try a good synthetic oil.