I just bought a used 2015 KLR with 500 miles on it. Im sure the owner hasn't changed the break in oil yet. When do I need to change the oil and which brand do you recommend? I've always used the expensive mobile 1 in my ninja and my four-wheelers never had a problem. Also how do I tell if this bike is the new edition with the heavier springs? Sorry for the dumb questions, but thanks so much for any help..