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  1. 7

    GTX 20W50, 3,355mi, 126k, '84 BMW 325e 2.7L

    Vehicle: 1984 BMW 325e (E30) Engine: 2.7L I6 (M20B27) Vehicle Mileage: 125,868mi OCI mileage: 3,355 miles Oil: Castrol GTX 20W-50 (5 quarts) Oil Filter: Bosch Make up oil: none Driving conditions: ~85/15 (Highway/City) Refilled: Shell Rotella T6 5W-40 My thoughts: Other than the Copper showing...
  2. 7

    Magnatec 5W30, 6045mi, 81k, '11 Tundra 5.7L

    My fifth UOA on my 2011 Tundra 5.7L, 3URFE, now with 81k miles. Oil tested was Castrol Magnatec 5W30 with Toyota filter, and right at 6k miles. Everything seems good, and the TBN is up a bit over the last analysis even though it had 1k more miles on it. The overall Iron ppm/mile is down...
  3. 7

    Toyota 5W20, 3431mi, 114k, '07 Camry 2.4L

    The first UOA, and my first DIY OC on my wife's 2007 Camry. It has the 2AZ-FE 2.4L slant 4. Previous OCs were done at the dealership where I was told they use Toyota brand oil. They also put the Toyota oil part number on the invoice. The makeup oil was some extra TGMO 5W20 I purchased from the...
  4. 7

    Magnatec 5W30, 5029mi, 75k, '11 Tundra 5.7L

    My fourth UOA on my 2011 Tundra 5.7L, 3URFE, now with 75k miles. Oil tested was Castrol Magnatec 5W30 with Toyota filter, and right at 5k miles. I kept with the standard 5k to establish a good baseline trend with the Magnatec 5W30. I also had a long trip planned, so I ended up changing it since...
  5. 7

    Magnatec 5W30, 4983mi, 70k, '11 Tundra 5.7L

    My third UOA on my 2011 Tundra 5.7L, 3URFE, with 70k miles. Oil tested was Castrol Magnatec 5W30 with Toyota filter, and just shy of 5k miles. I did the standard 5k so I could have a baseline to compare the extended OCIs in the future. I misplaced my sample bottle during the drain, so the...
  6. 7

    Castrol Edge 5W20, 5100mi, 65k, '11 Tundra 5.7L

    My second UOA on my 2011 Tundra. Oil tested was Castrol Edge 5W20 with Toyota filter, and a little over 5k miles. I did the standard 5k so I could have a baseline to compare in the future. The Edge looks to have more Boron, P, & Z compared to the universal averages. I refilled with Castrol...
  7. 7

    Toyota 5W20, 4300mi, 60k, 2011 Tundra 5.7L, 3URFE

    My first UOA, and first DIY OC on my 2011 Tundra. I refilled with Castrol Edge 5W20. Previous OCs were done at the dealership where I was told they use Toyota brand oil. They also put the Toyota oil part number on the invoice. I started doing my own OC because now I have a 120 mile commute, and...
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