Honda Civic R18 oil consumption?

I bought this 2008 Civic LX with 103k miles! After driving several hundred miles I switched the oil and filter to Mobil 1 Advanced Full Synthetic 5W-20 Extended Performance. Along with an expensive Bosch filter! Now I understand its fairly high miles (although not for a Honda) but howcome its burned half a quart (or maybe a bit more) in less than 2k miles? At this rate ill be putting 1.5-2 qts of oil in between oil changes! The oil isnt cheap! Is there something wrong? My VW 2.5l with 110k doesnt burn a drop using Liqui-Moly 5W-40? Personally I dont think an engine burning this much oil at a little over 100k is gonna touch 300k miles and I dont beat it at all (just generally have to rev higher to shift going up the mountain--ts a dog of a car!)

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