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  1. J

    Pennzoil Platinum 5W-30 - 6.2 LS3 - 7500 Mile OCI

    From Blackstone Labs. Engine has 77k miles on it. I bought it 3.5 years ago with 28k on it. Been on a steady diet of 5W-30 full syns between Pennzoil, Quaker State, and Mobil 1 since I've owned it. Always used the GM OLM to 5% (usually between 6500-7500 miles) and changed with an AC Delco PF48...
  2. J

    Castrol GTX 5W30, 6800 Miles, 2005 Silverado 5.3 4x4

    18209 miles on the truck, 6800 miles on the oil, with less than 1qt make up added before the change. I used the GM OLM on this one and will continue to as long as these readings stay nice. Tranny analysis for the weak 4L60E coming around 25k miles. From Blackstone: Jason, your GM engine has...
  3. J

    2005 Chevy Tahoe 4.8L- Unknown oil type/grade-Unknown OCI

    This vehicle was purchased from the dealer with 10,800 miles on it. I'll not go into the customer experience portion of the transaction as it was terrible. Needless to say, I obtained no service records and started my own records beginning from the mileage purchased. On a side note, I believe...
  4. J

    Grand Voyager steering has puked

    The wifes minivan (2000 Chrysler Grand Voyager SE) has had the steering puke twice on it this week. First she brought it back home whilst running around and siad the steering was really hard to do in it. First thing I do is check the fluid and see that the fluid has been pushed out the top of...
  5. J

    Castrol GTX High Mileage

    About a month ago it was time to change the oil in the minivan, so I trooped on down to Walmart and picked up a 5 Qt jug of Castrol GTX 5W-30 High mileage and stopped at NAPA for a gold filter. This is a 2000 Chrysler Grand Voyager SE w/ 3.3L Flex Fuel @ 95,000 miles. I've been pretty religous...
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