Doing a little spring cleaning in the garage today. I have 2 1/2 quarts of Amsoil Motorcycle 20-50, 1 quart of Mobile 1 V-Twin 20-50, and a half quart of Redline Motorcycle 20-50. Does any one see a problem with this concoction? It's 4 quarts, and that's what the bike calls for. I'm not doing the primary, or the transmission right now. Just the engine oil. Any thoughts? Comments?