I recently purchased a Honda BF5A , probably a 1998 or 1999. All the decals and engine serial numbers are gone. The manuals specify either 10w30 marine oil or 5w30. What would be a good choice for this motor besides the OEM honda stuff at $10/quart.
I know it requires a higher level of corrosion protection which is usually just some added calcium salts. This will be primarily a backup power supply and used a bit for back trolling. This will be very limited use. The previous owner had not changed the oil in a long time and it had a slight grey sludge look to it like it either had water intrusion or sat in a wet environment. I know it was a sail boat motor and sat in a wet well. It was possibly used in salt water at one time.
After I drained the oil , I flushed it with some Amsoil transmission fluid and then some 5w30 i had lying around to get all the old oil out. Inside looks very clean through the fill hole and it ran perfectly while i warmed it up before I drained the old oil.
I was thinking synthetic PU or ?.
I know it requires a higher level of corrosion protection which is usually just some added calcium salts. This will be primarily a backup power supply and used a bit for back trolling. This will be very limited use. The previous owner had not changed the oil in a long time and it had a slight grey sludge look to it like it either had water intrusion or sat in a wet environment. I know it was a sail boat motor and sat in a wet well. It was possibly used in salt water at one time.
After I drained the oil , I flushed it with some Amsoil transmission fluid and then some 5w30 i had lying around to get all the old oil out. Inside looks very clean through the fill hole and it ran perfectly while i warmed it up before I drained the old oil.
I was thinking synthetic PU or ?.