I've used DT40 since I bought my car at 90K. Didn't do a flush because I was told the base oil between the Mobil 1 and the DT40 is the same. I drive about 70+ miles a day, a signifigant potion of that time at 80+ mph on a toll road.
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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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