4 responses

  1. David Garner
    May 15, 2018

    Was there any fall off in pressure with the use of the stock oil?


  2. Derrick Ambrose
    May 16, 2018

    None at all. We used the stock weight of oil but the Motul synthetic for the brand.


  3. Jeff Yirak
    May 16, 2018

    Nice analysis. I’ve used Blackstone on all my cars since 2009. Makes a great selling point when you’re trying to sell the car and want to assure the potential buyer you’ve taken care of the engine.

    Also, big 2nd on doing what the engineers tell you w/r/t oil, coolant, thermostat, etc. They know what they’re doing, and unless there is a financial driver influencing the design, there’s no reason to continue their R&D on your car.


  4. Padre Dave Poedel
    May 18, 2018

    I’m assuming that the Blackstone is the oil that the dealer uses. All of my vehicles are Mazdas, and all use the Mazda synthetic oil, even my Speed3 with over 100,000 miles on the car. Good news, as I admit that I was worrying about using the “generic” Mazda oil with all of the brands out there telling me that theirs is better.

    Thanks for the objective analysis


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