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Model: 911, Year:1988, Mileage:68000, Type of use:Street use only
Just purchased a 1988 Cabriolet. Very nice shape. The previous owner has been using synthetic. I've heard that regular oil is better for older high mileage cars susceptible to oil leaks. It has a very slight leak at the head. Not enough to show up on the garage floor. I've also heard that once you start using synthetic you should stay with it.Any thoughts would be appreciated.

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