Hello all. It has been brought to my attention that we are supposed to use 5w-40 oil in our machines. I have been using 10w40 motul 7100 for 20,000 miles and it seems to run fine. I also ride every day through traffic in an extremely hot climate. Should I make the switch to 5w oil? It just seems like it would be a little too thin for the Texas heat. Any opinions or inputs are welcomed.