Well I check my oil 2 weeks ago and, at 1400 miles, not one drop of oil was burned. Just checked it again today at 1700 miles and the level is just below all the XXXXX's. How much oil should I add when it's at this level?

There was quite a bit of VTECing between oil checks :-)

 

Fill it up to full.... i.e., so that all the xxxx are covered with oil when checked in the morning. Check both sides of the dip stick and be careful not to over fill it.

Do a search a you'll find tons of posts on adding oil.

 

If it's at the L, add 1 quart to get it up to the H.