On these engines, the two cycle oil is for lubrication of the crankshaft, rod bearings and piston wrist pin during operation. The transmission is separate from the moving engine components and requires oil for lubrication of the bearings, shafts and gears. There should be an oil port on the top of the transmission case for filling. Some have a dip stick on them and some have a site glass in the side of the transmission housing to visually see the level of the oil.
There is no place to add additional "oil to the engine" as you ask, but as the engine and transmission cases are attached at the base of the cylinder, its easy to see how someone can assume the transmission oil may be engine oil. Its not. The transmission oil also serves duty as lubricant for many motorcycle and 4 wheelers 'wet clutch' assembly as well. Low oil in the transmission could be detrimental to the clutch discs.
SOURCE: i bought dirt bike for husband! is 2005 yamaha
Congrats on the purchase! easy way to tell look at the exhaust pipe. if it is just a thin tube that is tight to the engine and goes right to the muffler it is a 4 stroke (250f). the four strokes have a square-ish head. Deep/bass-y engine sound. If you have a large (probably black) exhaust pipe with a large bulge in it (5-6" diameter) that wraps around the front of the frame, its a 2-stroke. They have a more round cylinder head. Beautiful pingy sound and a little smokey at start up. DON'T FORGET TO MIX YOUR GAS!!! there should be a serial number sticker at the very front of the frame (behind the number plate where your triple clamp/handlebars connect) Probably on the left side. Hope it helps! rate please :)
SOURCE: Battery size (volts) gas to oil mixture
12V battery 40:1 to 50:1 two-stroke ratio, but you shouldn't need to worry about that - it has automatic two-stroke injection.
SOURCE: I need to know the oil to gas ratio for my 82'
the correct ratio is 32:1. thats 4 ounces of oil for every gallon of gasoline. if your riding it hard or in very hot wweather, you can even go 28:1, or 5 ounces to a gallon. dont go any less, or you risk damaging your engine. and dont use more then 5 ounces per gallon, or you willl have poor performance. the manufacturers back then reccomended using very high amounts of oil, like a 20:1 ratio, but with our better technology and more advanced oils, that is not neccessary. just remember, either 4 or 5 ounces to a gallon, and both you and your bike will be happy.
SOURCE: 2004 rm 85, 2 stroke
The silcolene does not burn as well as standard two stroke oil. The unburned oil has to go somewhere and out the exhaust is it. Get a new gasket anyway. It should help.
Testimonial: "thanks this is consistent with what others have told me."
SOURCE: the muffler is all leak ing and gap 2 stroke oil leaking out
hi buddy they do leak oil from the exhaust but if there is no power its normally the piston rings gone i will tell you how to check this when i get home from work
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