I took my 2007 Goldwing to the dealer to have an oil change done and was told that my clutch plates are wearing. The two mechanics could tell from the smell. I only have 18,000 miles on my bike. The mechanic suspects it comes from my choice of oil. I use 10 - 30 Amsoil full synthetic. He recommends using regular petroleum based Honda motorcycle oil. He said the full synthetic oil also weakens the engine seals. He recommended that I stay with the full synthetic until the clutch plates eventually require replacing. He said that the plates have already soaked up synthetic oil, so I should stay with synthetic until the plates are eventually replaced. I would appreciate other opinions. The mechanic seemed very sincere, but thought regular petroleum based motorcycle oil is better for the GW. I wish I could minimize the damage that is being done to my clutch plates. Any recommendations or ideas would be appreciated. Thanks.
OK serious answer.
What kind of amsoil? Is it the kind for automobiles or the kind made especially for motorcycles and a wet clutch. There is a difference.
Although rare, yes sometimes, full synthetic oil will cause a clutch to start slipping. So I guess I would listen to them this time as it does once in awhile happen. Oil will have a distinct smell if something such as the fiber plates are burning the oil, as does antifreeze and other things in the oil. It will also change color ......so just maybe it is so.
I would drain out a quart of the old oil, dump in a quart of mineral based auto transmission fluid and run the bike easy for about 25 miles, drain it all and put either a synthetic made for a wet clutch or regular ole dino oil in it.
Another thing that can cause the clutch to not seat properly and slip is the o ring or something out of place in the clutch housing plate and or the pressure plate of the clutch. The 1800 has an oil assisted clutch and if the clutch is not closing properly that could cause it.
I would flush it good, put new oil in it, run it a thousand miles, check it, run it another thousand, check it, run it to 3K check it, dump that, put new in and if no smell or problems show up, go back to normal. If the oil is still burning, I would suspect the clutch itself.
Kit