I am switching out the spark plugs on my '98 V70 AWD (201.5 K miles) and notice, on two of the spark plugs, that there appears to be oil deposits (cylinders 2 and 3, left to right, if I'm "reading" from the front of the car). I was planning to go ahead and just complete the spark plug job, but I'm concerned that there might be larger issues. Should I have my indy mechanic take a look before I plan on driving? Should I simply go ahead and change the spark plugs and hope for the best? The plugs had not been changed for 35,000 miles/3 years, 7 months, and the performance and gas mileage had recently declined (I posted about this a few days ago). Thanks!
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