Hello all, I just bought my first Harley Davidson and I love my HD. It's a 2012 Road King Classic 103ci. I've owned metric bikes all of my riding life until now. I must admit I was missing out on what a real bike should be. With that being said, please forgive me on my ignorance but does my 2012 Road King have a dry sump oil system or a wet sump system. I do not have a oil tank on my bike like my neighbors 2012 Deluxe. Also should I run full synthetic oil or mineral based oil. Can I go longer on synthetic? Thank you all for your advice......det45 San Antonio Texas.