hi, I would welcome informed opinion on a 260 I viewed this weekend. The car was in good condition and well looked after by the current owner but I noticed in the previous service history that it had its second service and oil change at 13,200 but was not then serviced/oil change until 28,700, a gap of 15,500 miles over 15 months. I know from this site that oil changes should be at 5000 miles, do you think there would be any adverse effect on the engine to go this distance before oil change.

Thanks John