Should I use 20w50 or 10w40 oil for my motorcycle

New motorcycle engine oil (as per manufacturer's recommendation)
Oil filter
Wrench or socket set
Oil drain pan
Funnel
Shop rags or towels
Prepare the Motorcycle:
Ensure the motorcycle is on a level surface and turned off.
Allow the engine to cool down if it has been running.
Locate Drain Plug and Oil Filter:
Identify the oil drain plug underneath the motorcycle engine. It might be covered by a skid plate or other protective cover.
Find the oil filter. It's usually located on the side of the engine.
Drain the Old Oil:
Place the oil drain pan underneath the drain plug.
Use a wrench to carefully loosen the drain plug (anticlockwise). Let the old oil drain completely into the pan.
Once drained, re-tighten the drain plug securely.
Replace the Oil Filter:
Use an appropriate tool to remove the old oil filter. Be ready for some additional oil to drain out.
Apply a thin layer of new oil to the rubber gasket on the new oil filter.
Install the new oil filter and tighten it according to the manufacturer's instructions.
Refill with New Oil:
Locate the oil filler cap, usually on the side of the motorcycle's engine.
Use a funnel to pour the recommended amount of new motorcycle engine oil into the oil tank.
Check Oil Level:

You should use a good motorcycle oil. A motorcycle oil has additives that benefit the clutch. I recommend Amsoil 10W40 motorcycle oil for the goldwing for most conditions and I am not a dealer.

Your oil filter part number from Honda is #15410-MFJ-D01.The Honda filter is the best quality filter available for your machine. Other brands of spin on are available from Fram, Emgo, Amsoil, etc. Your oil capacity is 3.4 quarts of motorcycle. To change your oil you will need 4 quarts of oil, a filter, and a new aluminum drain plug washer. You can reuse the old drain plug washer if it has not been squished out of shape. Your motorcycle comes from Honda usually with 10w-40 mineral base motorcycle oil. You can use any oil that is JASO MA certified motorcycle oil. 10w-40 for cold climate. 20w-50 for warm climate/touring. Automotive oils use different additives and may cause scoring in certain types of cam bearings. Do not use any oil that says " Energy Conserving " on the label . It will shorten the life of your wet clutch and transmission gears. If you choose Synthetic oils, they will help your bike run cooler and shift easier. Pour in 3.2 quarts of oil or till it reads on the dip stick or inspection window. Make sure the motorcycle is upright or on the center stand when checking the level . You will probably need 3.4 quarts to hit the high mark. Run the motor for a minute or two to fill the oil filter compartment with oil. Now recheck the oil level and top up as needed. If you want to try an "inexpensive" full synthetic oil that is JASO MA rated 15w-40 Shell Rotella T Synthetic fits the bill at about $23 per gallon. All brands/manufacturers make a motorcycle oil. Some are very hard to find. Just make sure that the oil you pick has the JASO MA "Japanese Rating" to protect your motorcycle engine,clutch and transmission.

Your oil capacity is 3.4 quarts of motorcycle. To change your oil you will need 4 quarts of oil, a filter, and a new aluminum drain plug washer. You can reuse the old drain plug washer if it has not been squished out of shape. Your motorcycle comes from Honda usually with 10w-40 mineral base motorcycle oil. You can use any oil that is JASO MA certified motorcycle oil. 10w-40 for cold climate. 20w-50 for warm climate/touring. Automotive oils use different additives and may cause scoring in certain types of cam bearings. Do not use any oil that says " Energy Conserving " on the label . It will shorten the life of your wet clutch and transmission gears. If you choose Synthetic oils, they will help your bike run cooler and shift easier. Pour in 3.2 quarts of oil or till it reads on the dip stick or inspection window. Make sure the motorcycle is upright or on the center stand when checking the level . You will probably need 3.4 quarts to hit the high mark. Run the motor for a minute or two to fill the oil filter compartment with oil. Now recheck the oil level and top up as needed. If you want to try an inexpensive full synthetic oil that is JASO MA rated 15w-40 Shell Rotella T Synthetic fits the bill at about $23 per gallon. All brands/manufacturers make a motorcycle oil. Some are very hard to find. Just make sure that the oil you pick has the JASO MA "Japanese Rating" to protect your motorcycle engine,clutch and transmission.

To change your oil you will need 4 quarts of oil, a filter, and a new aluminum drain plug washer. You can reuse the old drain plug washer if it has not been squished out of shape. Your motorcycle comes from Honda usually with 10w-40 mineral base motorcycle oil. You can use any oil that is JASO MA certified motorcycle oil. 10w-40 for cold climate. 20w-50 for warm climate/touring. Automotive oils use different additives and may cause scoring in certain types of cam bearings. Do not use any oil that says " Energy Conserving " on the label . It will shorten the life of your wet clutch and transmission gears. If you choose Synthetic oils, they will help your bike run cooler and shift easier. Pour in 3.4 quarts of oil to reach the high mark on the dip stick or inspection window. Make sure the motorcycle is upright or on the center stand when checking the level . Run the motor for a minute or two to fill the oil filter compartment with oil. Now recheck the oil level and top up as needed. If you want to try an inexpensive full synthetic oil that is JASO MA rated 15w-40 Shell Rotella T Synthetic fits the bill at about $22 per gallon. All brands/manufacturers make a motorcycle oil. Some are very hard to find. Just make sure that the oil you pick has the JASO MA Japanese engine Rating to protect your motorcycle engine.

To change your oil you will need 4 quarts of oil, a filter, and a new aluminum drain plug washer. You can reuse the old drain plug washer if it has not been squished out of shape. Your motorcycle comes from Honda usually with 10w-40 mineral base motorcycle oil. You can use any oil that is JASO MA certified motorcycle oil. 10w-40 for cold climate. 20w-50 for warm climate/touring. Car oils use different additives and may cause scoring in certain types of cam bearings. Do not use any oil that says " Energy Conserving " on the label . It will shorten the life of your wet clutch and transmission gears. If you choose Synthetic oils, they will help your bike run cooler and shift easier. Pour in four quarts of oil to reach the high mark on the dip stick or inspection window. Make sure the motorcycle is upright or on the center stand when checking the level . You will probably need between 3.1 and 3.4 quarts to hit the high mark. Run the motor for a minute or two to fill the up the oil filter compartment with oil. Now recheck the oil level and top up as needed. If you want to try an inexpensive full synthetic oil that is JASO MA rated 15w-40 Shell Rotella T Synthetic fits the bill at about $22 per gallon. All brands/manufacturers make a motorcycle oil. Some are very hard to find. Just make sure that the oil you pick has the JASO MA Japanese engine Rating to protect your motorcycle engine.

To change your oil you will need 4 quarts of oil, a filter, and a new aluminum drain plug washer. You can reuse the old drain plug washer if it has not been squished out of shape. Your motorcycle comes from Honda usually with 10w-40 mineral base motorcycle oil. You can use any oil that is JASO MA certified motorcycle oil. 10w-40 for cold climate. 20w-50 for warm climate/touring. Automotive oils use different additives and may cause scoring in certain types of cam bearings. Do not use any oil that says " Energy Conserving " on the label . It will shorten the life of your wet clutch and transmission gears. If you choose Synthetic oils, they will help your bike run cooler and shift easier. Pour in four quarts of oil to reach the high mark on the dip stick or inspection window. Make sure the motorcycle is upright or on the center stand when checking the level . You will probably need 4 quarts to hit the high mark. Run the motor for a minute or two to fill the oil filter compartment with oil. Now recheck the oil level and top up as needed. If you want to try an inexpensive full synthetic oil that is JASO MA rated 15w-40 Shell Rotella T Synthetic fits the bill at about $22 per gallon. All brands/manufacturers make a motorcycle oil. Some are very hard to find. Just make sure that the oil you pick has the JASO MA Japanese engine Rating to protect your motorcycle engine.

You can use many brands of oil : Honda oil, Yamalube, Suzuki oil, Kawasaki oil, Rotella T non synthetic oil ($12 a gallon), Mobil 1 motorcycle, Kendall, Castrol, Amsoil, Maxima, Bel-Ray, Motul, Pennzoil motorcycle, Royal Purple,Specro,Torco, Valvoline motorcycle, etc. Most oil brands sell a motorcycle oil, it just is not common to find it at many auto stores. Just make sure the oil you pick has the JASO MA Rating for Japanese motorcycle engines and is not an energy conserving car oil. The only reason Shell Rotella is mentioned (synthetic and regular) is because it is less expensive than all the other choices.

If you have a separate transmission oil bath from your piston, crankshaft, head side of the crankcase , you can use 10w-40 JASO MA motorcycle oil. The same oil can be used in the piston side as in the transmission side of the engine. Racers will use 80 wt motorcycle transmission GEAR oil. For an edge you could use 70 wt motorcycle transmission GEAR oil. The transmission gear oil helps preserve the wet clutch and gears in high powered race bikes.

Motorcycle oils and passenger car oils are very similar, with the exception of a couple of areas that are key to motorcycle operation. The first area concerns common sumps, or the use of motor oil, to lubricate and cool the transmission. As you know, in a passenger car the transmission is lubricated by an ATF fluid, which has frictional properties required for transmission operation. In a motorcycle, where the transmission may be lubricated by the engine oil, an engine oil that does not have the same level of friction modification (for fuel economy) of a typical passenger car engine oil will provide better transmission performance in terms of transmission lock-up and slippage. So motorcycle engine oil does not contain the friction modifiers of a passenger car engine oil. The second area of concern for motorcycle engine oils is that they tend to shear (breakdown viscosity) more quickly than a typical passenger car. Mobil 1 motorcycle oils are designed to provide exceptional protection against viscosity loss.