hey i own a 2007 civic si and its got 135,000 miles. its been burning a lot of oil. currently im running castrol syntec 5w30 and i probably go throw a quart every couple weeks. ive heard the k20 burns a little oil but i think its a little absurd to be burning this much oil. is there an additive i can use or a different oil that will burn less? i want to reduce my oil consumption.