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Discussion Starter #1
Im running C16 racing fuel, and never had this problem before, but just put new oil and filter and made 4 passes at the track and the oil looks dark...I have had this oil in boxes when it was on sale at autozone about 5 years ago...Is it the fuel or bad fuel causing this, Car ran realy well , but hadn't figured out what it turn dark soo soon...First time the car has seen some higher rpms since motor was built new...
 
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