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Ok Tileman here again, now I checked the level of oil in the primary/tranny, had Moble 1 75/90 in her. Wondered if the 75/90 was too heavy, so I drained the oil and measured it and it was almost exactly 1 qt. Now, putting in Moble 1 20/50 V-Twin in, instead well stopped pouring at half qt and check the level and it was almost to the bottom of the clutch plate. Added little more so now there's 3/4 of a qt and it's right to the plate. Question, do I put the rest of the qt in? I obviously had what I've read to much oil in cause I dumped the whole qt last time. ( yes I'm still playing with the clutch )
when draining, it helps if engine is warm/hot so that lubes can fully drain. On a cold engine during a drain, some of the lube will remain. Especially thicker blends.
Filling a primary to bottom of a clutch plate will grant you a sufficient amount of lubrication for normal operation.
See service manual diagram.
I recall the oil level should be just to the bottom of or at the clutch basket teeth.
As, I believe the manual states .9 of a quart.
IMO, no don't add the rest, use the ser. man. as you guide.
Have fun wrenching!
If it's up to the level, no need to add more. On a hot bike and draining while changing the engine oil, 1QT ends up almost perfect for me. Been running the Mobil1 75W-90 and Mobil1 15W-50 motor oil for 65k miles now, and every time I've torn the motor or trans. apart they have been pristine. Never gonna switch.
And as far as 75-90 being the same weight, gear oil and motor oil are on different grading scales.
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1Qt looks to much
