05-02-2018, 09:33 AM
It's funny that this should come up, but Saturday I was up at the shop and asked the head mechanic (30 something years factory trained Honda and Yamaha & the guy that does all my work), his opinion of doing oil changes hot or cold (since I had just changed the oil in my ST Friday and warmed it up with a 40 mile test ride first). He says at the shop, he drains them hot, because it drains quicker, and he is on the clock. At home and on his own bikes (a 2010 Goldwing and a Yamaha XT 500 enduro) he drains them cold, because every bit of the oil and contaminants are in the pan at the bottom of the crankcase. He says it takes longer to drain, but at home he pulls the plug and goes and has lunch and when he gets back, it's drained. He felt he got out more contaminants that way.