I did my engine swap (d16z6) in my 90 hb about 2 months, putting alot of miles on the motor. I did the frist oild changed about a month ago and the oil came out great, and about the same amout as as I put in. But this last month, i got vtec going on it. Kicking on vtec every now and then, I realised when I changed my oil yesterday almost nothing came out of there. Is vtec suppose to make your car burn oil ???. Or are the vavle seals strating to go ??? I need help A.S.A.P. This i can know if I need to send the head to get redone next week.