hi. why does the oil from the gearbox flow into the primaries? It doesn't leak or drip from the motorcycle anywhere.

 

I have never heard of tranny oil migration in an EVO engine bike

When it happens on M8`s it`s due to trans oil traveling along the clutch throw out rod

Are you SURE it`s trans fluid ?

More common would be engine oil coming past the crankshaft seal

Provide more details please

 

the oil is reduced in the transmission box. I'm draining it from the primaries. several times already.

 

Oil doesn`t flow from a 5-speed gearbox to the primary, unless you store the bike laying down on its left side.

 

in the parking lot, it stands on the left all the time.

 

Yes, but it does not lay on its side...

You need to set all the oils to the correct level and check them all after a few hundred miles to determine what the issue is.

 

It stands like that all the time.

 

1 litr primire
1 litr gearbo
4 litr engine
evolution 1998

 

Are you checking this via the transmission dipstick? Please provide photo of it.

 

I'm checking the transmission probe. It's decreasing all the time. and in the primary, the oil increases. maybe the probe is wrong?