Oil is always changed about every 3000 miles several times a year and is always hot when I drain it. Since the car is mostly run in and around the city I usually try to get it up to operating temperature all of the time. The oil remains quite clean between intervals which I think is a good sign for the cleanliness inside the engine. The car has always received oil changes on time and it was dealer serviced for most of its life.

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1989 300CE