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Originally Posted by newjerseydave
1998 Boxster with 71K miles (purchased from original owner in October 2010).
Did oil change in late October (Mobil1) and have driven the car only on decent days over the last 4 months. Have only put 900 miles on the car since October 2010.
My question is how much longer can I go before changing the oil again? Is it a mileage question or number of months?
thanks,
Dave
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I've heard everywhere from 3 to 12 months on time, 3k to 15k on miles.
Myself I do 1 year and 3k for Mobil 1, maybe 2k more miles but not longer time for a better oil. Do a search for oil threads for opinions on better oil grades/brands.
Examine the oil filter for solid residue. Consider a magnetic drain plug.