Recent content by Big O Dave

  1. 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...
  2. 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?
  3. Big O Dave

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

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

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

    Good question!
  5. 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?
  6. 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.
  7. Big O Dave

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

    Pretty snazzy car!
  8. Big O Dave

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

    I can only imagine... very funny!
  9. 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.
  10. Big O Dave

    Where did all of the 30W conventional go?

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

    Post your latest oil change

    2020 Cadillac XT5 LSY 0W-20 Valvoline Restore and Protect Vietnamese Carquest oil filter
  12. 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?
  13. Big O Dave

    2026 Cummins Teardown Video - Chinese Block

    Dave's Auto Center 2026 Cummins Teardown Apparently, the truck this engine came from was in a serious fire. Block designed with an innovative oil heater. Dave sure has an impressive shop!
  14. Big O Dave

    Valvoline Restore and Protect Oil Burning Update - 2018 Chevrolet Equinox

    It seems that under ideal conditions and in a superb engine, 10,000 miles is doable with Valvoline Restore and Protect. I still believe (there's that word!) that with a turbocharged GDI engine the intervals should be shorter. But, that's just me...🤷‍♂️ FWIW, I am running Valvoline Restore and...
  15. Big O Dave

    Valvoline Restore and Protect Oil Burning Update - 2018 Chevrolet Equinox

    I'm a big believer in the merits of Valvoline Restore and Protect, but without knowing the vehicle and engine, I would say that I would never exceed a 5,000 mile interval with a turbocharged GDI engine, and would most likely not exceed 4,000 miles. For me, that's probably true regardless of oil...
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