I DD mine. I change the oil every 5k (about 3 months) and I get a UOA from Blackstone Labs. I have a list of stuff to keep an eye on including water pump (just changed due to dry residue on housing), cam deviation, and tire tread depth. My IMS was swapped at 90k and LN says it should be done again after 50k so that's on the list to watch out for. I also follow the major and minor maintenance schedules. It cost more for sure but I driving it more than any other car I've ever owned.
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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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