No I don't bother with an oil analysis
Just what I thought. You have no idea what shape your oil is in.
And why 3 to 4K? Who picked that number? Ouija board? Tarot cards? Coin flip? Why not 1000 miles or even 500 miles? After all, you can never be too careful. :R
I change my oil right around 10K. Why? Because that is what the OLM says to do. You know, the people that engineered and build my engine also designed the OLM system. And then it was backed up with lab analysis. Know what the lab said at 10K? "Your close, but you still have a little time on your oil." So even the OLM system is conservative.
BTW, I'm not suggesting you change your schedule. The economy is still bad in the US and people with your oil change schedule keep the economy going. :B Thank you for your contribution!