I'm not sure what is going on, so I need some help. I've recently changed my oil and filter (yes, I placed the correct amount of oil in the crank) and when I start it up then, let it sit for 10 min. the sight glass appears almost empty. So, I added just a touch more - looks good, and start it up and same thing?!!! Long story short, I replaced the new filter with other new filter thinking it was bad, but still the same story. What would cause this? Is the sight glass accurate? I had no problems before with this? Please tell me its nothing major... Thanks for you help!