How many miles on this engine - 90,0000 miles .2. Have you checked the oil level - yes, the oil pressure came on as it had used 3 litres of oil in less than 1 month. No evidence of any oil leaking from engine 3. What is the idle of this engine when the light flickers lower than 600rpm - no, just kicked in at about 900rpm.4. Any engine noise ,like a top end ticking sound that will go away ones engine revs are higher than 1000rpm - mazda petrol engines of this sort are quite noisy but nothing out of the ordinary, knocking etc.5. Has any work been done in the past on this engine - car bought in February - nothing evident in service record .