need advice on high mileage oil
Ok I have a 88 GT with 110,000 miles. I have only had car for 4 weeks. I put Maxlife in on the first oil change. I was thinking about using mobil 1 or mobil higher-mileage SuperSyn Fully Synthetic Motor Oil, but the car has used a quart in 2000 miles. I can see a little light gray smoke if I am behind the car and someone is getting hard on it. It also has a leak around one of the valves covers. It leaves about a haft dollar sizes spill each time the car is parked. Will the synthetic leak more then regular and burn more, should I stay with the regular?
2003 Mustang GT 3.73, Kenne Bell 2.1 Intercooler @ 10lbs 90mm MAF, 75mm TB, cold air kit, switch chip. 426 rwhp, 446 rwtq in shoot out mode,MMS caster camber plates, lower control arms and SFC