I noticed a huge difference when I put Mobil 1 15w-50 in my old 2005 Harley Davidson XL1200C. It was night and day difference. It shifted smoother, ran smoother(I know that that is hard to believe on a Harley). I had the first service done on it at 800 miles and i dunno what the Honda store put in it. I assume that they used Honda GN whatever dnio. Now that the weather has turned to non riding weather I will put Mobil 1 15w-50 in it once the weather turns around. God I love this Bike! 07 RWB FOREVER!!!!!
