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  1. M

    ARX in weekend car.

    Hi. I've tried to search, but no luck. I have a Porsche 944S2 that I rarely drive. I have ARX in the oil now, but I rarely drive the car. I try to start the car and get it hot at least once a week. It may take me a year to go 3000 miles. Should I just follow the mileage instructions and...
  2. M

    Is Mobil1 Group 3 or 4?

    Hi. I'm new to this site but I have tried searching for the answer with no luck. Is Mobil1 oil Group 3 or Group 4? I'm specifically talking about 15-50 and 0-40 that I stockpiled in the end of '06. I recently put 15-50 in my car, and then more recently put in Auto-Rx. Apparently ARX is fine with...
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