My buddy bought this bike yesterday for $1500 OTD. Neither of us have ever been on a motorcycle. Ever. So I'm trying to give/get sound advice in the maintenance department. My only bike knowledge is extremely limited and comes from someone who owned a HD Road King, and I'm sure there are huge differences. Therefore all of my input is based on my car knowledge. What I know about the bike (I haven't laid eyes on it yet): *'02 Yamaha XVS1100 *About to roll over the 30,000 mile mark *Seems to be a quality ride, as he had a friend who is an excellent car dealership mechanic/veteran rider go with him to look at it. *Some kind of custom exhaust *Bought from a dealer, so no history I've skimmed the owner's manual already, and here is what stood out (correct me if I'm wrong!). Calls for either 10W-30 or 20W-40(?!?), SG or higher, and 3.28 quarts with filter. It will get a filter change every time contrary to the manual. I'm leaning toward either a 10W-40 or 20W-50, obviously NOT PCMO. I'm a fan of synthetics, he's not . But our summers get pretty brutal, it's at 30k, and he's 6'3" 375-390, so I think it needs all the help it can get. He can be convinced if it makes sense. It calls for 87 octane (8.3:1), but I'm under the strong impression he should use 91 octane (and 0% ethanol in any octane, which is very easily obtained here). Due to unknown maintenance history, plugs, air filter, fuel filter, gear oil, and oil change w/filter should be done immediately. Plugs will be NGK BPR7ES like the originals (or is something else better?). Gear oil says SAE 80 or 80W-90. I'm leaning toward a synthetic 75W-90. As for the owner, he's 30, a big guy, and definitely NOT the hot rod type. He honestly wanted a small engine, like 400cc, but came across this and couldn't pass. Yes, he's aware 400cc for his size was vaslty underpowered, but he just wants to ride slow and easy. 1100 is more than enough, and he plans on taking things extra slow. At least with 1100 he can take the highway to work . He plans on taking it to a very remote area to ride it a few times to get comfortable with it. Just enough to not embarass himself when getting his license. Hopefully I'm not missing much... am I missing anything? Please chime in, and please feel free to call me an idiot on anything I assumed incorrectly. Any and all advice appreciated! I am very interested in learning how to maintain a bike. I like a challenge. Thanks in advance! Edit: I'm also a Techron fan. He's [unfortunately] a Lucas fan... Are there any cleaners that can be used?