1999 honda civic going threw 2.5 qts every 500 miles

Question

civic has 194.000  It was my sisters,she had long time.
p0420 been on for few years,mechanic said-needs a cat,dont spend the money.oil changes on time and maintanced.
small oil leak out front engine seal noticed in morning,and washing down oil pan,silver dollar size. no smoke out tail pipe.no any other leaking external or noticeable out exhaust. runs great,great fuel mileage, pvc issues or engine breaher on this Honda,under neeth little wet too,like spraying out seal when driving.is there a filter system for crankcase system on this?

Answer 1

Small oil leak silver dollar size that is enough to loose oil, There is no filter for the crankcase, a engine can consume oil and this depends on your driving habit, A aggressive acceleration will consume oil so will engine braking, The viscosity of the oil also plays a role, you can use 10 w 30 , and in this year a 10 w 40. , use only regular no synthetic blend or full synthetic.