Recent content by Big O Dave

  1. Big O Dave

    Oil Strategy To Prevent Carbon Piston / Ring Deposits ?

    I use Shell or Chevron premium in my LSY-equipped Cadillac XT5. This car is spec’d for premium fuel and I consistently get 28 mpg with it, so it hurts a bit less when I have to pay for the fuel. Having said that, my understanding of the benefit of using Top Tier Fuel in a TGDI engine (from a...
  2. Big O Dave

    Mobil 1 ESP X4 0W-40 vs Mobil 1 ESP 0W-40

    Wow! That is gorgeous!!
  3. Big O Dave

    LSJr tests and discusses DexosD babymax oils

    I’m so confused! I have carefully read all of the posts and I don’t get it. To me, it seems that the peak torque data is under-discussed, yet it seems to me it is the most interesting and important data to come out of this video.
  4. Big O Dave

    I think my fleet is expanding...again. Not sure what to buy next.

    This is a SUPERB car! I was shocked at how smoothly it rode on the terrible streets of Newhall with those extremely low profile tires. Quiet, powerful, excellent handling - I am impressed! It was good meeting The Critic in person! We've known each other for at least 20 years at BITOG...
  5. Big O Dave

    Need a higher viscosity oil than 5w30 that keeps rings clean

    1 qt in 15 miles 😳 That’s CRAZY! Is it a typo?
  6. Big O Dave

    Best 5w-30 engine oil on the shelf at Walmart?

    Yes, that is what I meant. In my opinion.
  7. Big O Dave

    Valvoline restore and protect 5w30. SQ GF-7 ????

    Good question!
  8. Big O Dave

    Which Group III/III+ oils are least likely to be affected by the Iran War?

    With the damage/destruction to refineries in the Middle East, which oils are most and least likely to be affected?
  9. Big O Dave

    Best 5w-30 engine oil on the shelf at Walmart?

    From my experience I’d have to say Valvoline Restore and Protect.
  10. Big O Dave

    Toyota GR Corolla ... Now running Amsoil Signature Series 0w-20..

    Pretty snazzy car!
  11. Big O Dave

    Does Shell/Pennzoil GTL Cause Less GDI Intake Valve Deposits?

    I can only imagine... very funny!
  12. Big O Dave

    Does Shell/Pennzoil GTL Cause Less GDI Intake Valve Deposits?

    BINGO!! You may not be an "expert," but you know and understand a LOT about this subject matter.
  13. Big O Dave

    Where did all of the 30W conventional go?

    Forgive my ignorance but what is an OPE engine?
  14. Big O Dave

    Post your latest oil change

    2020 Cadillac XT5 LSY 0W-20 Valvoline Restore and Protect Vietnamese Carquest oil filter
  15. Big O Dave

    Valvoline Hybrid Oil in a non-Hybrid turbo DI engine?

    Seems pretty stout: Valvoline 0W-20 Hybrid PI page Thoughts on using this in a non-hybrid?
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