Good to hear your motor is still tip-top!
(I kinda figured it was OK, these motors are, well, built like a bullet)! (Hey! What a slogan, think they'd buy it?)
A few years ago I was teaching my 2 boys about oil, (we run mostly 2 stoke off road bikes, so crank case oil is new to them), I explained how the oil expands, yadda, yadda.
So, I had them dump the oil inmy bike, (it happened at the time to be a '99 R.E. with the trials kit), swap out the filter, make sure all the oil was out.
Then the EXACT amount the owners manual said, new filter.
Started it up, ran it like 30 seconds to get the filter filled.
Shut 'er down, checked the oil.
Fired it again let it run like 3-4 minutes, rechecked it.
There was their 2 oil check marks! Cold-hot.
Rule of thumb I use, split the difference between high and low marks.
To this day they do that.
Worked for them............
Joe
What ya mean it's running great? Ge tit in here and let's see what we can do!