Well guy,s thanks for the responses,mechanic showed me the amount of oil drained out,these guy,s have done all my servicing in the past,and no it wasn,t 1.5 to top up that was what came out.Car is a 57plate one owner with 18.5k miles.Oil pressure was reading at first line on gauge around 30 i guess when running at 60mph,i had no idea what it should have been reading,and no oil light on.I know i should have dipped it before completing the sale but took the guy at face value.There were no noises at all from the engine and pressure is much higher now,but going by your comments i may have to trade it,cheers