Sample 2 results are back. I switched to DT40 with out the flush. Blackstone says there is no need to flush because they oils are similar. I'm not an oil expert. No TBN again because I have no intent in extending my oil change intervals beyond 5K.
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2003 S, 6 Speed, PCM, PSM, Bose, Litronics with washers, on its' second LN IMSB, comfort top, UDP, 987 engine mount, 997 RMS, Koni Sport Shocks, H&R springs, Techno brace, comfort blinkers, nin8six windscreen, particlewave light up cubby
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