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Changing engine oil every 16000 miles
Hello my friends
I use my 2000 Boxster in summer only, by nice and warm day ,and I am not racing it. So around 1500-2000 miles per summer!
It is garaged otherwise !
Several books say change engine oil at 16000 miles interval. Some say once a year!
I am using Mobil 1....
What do you think,please? Thanks in advance
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