Recent content by JAG

  1. J

    Three high-ZDDP 40-weights

    Thank you!
  2. J

    Mobil1 Euro 0w40, 3909km OCI, 2010 STI

    <div class="ubbcode-block"><div class="ubbcode-header">Originally Posted by c5z06</div><div class="ubbcode-body">Sounds too good to be true honestly. Any harm in running that normally ?</div></div> I've never read about any downsides, other than cost, when used at an appropriate treat rate...
  3. J

    Mobil1 Euro 0w40, 3909km OCI, 2010 STI

    I like Hy-per Lube ZRA based on reading literature on polymer esters, which it entirely consists of. It's a fascinating lubricant with unusual properties, like decreasing the activation temperature of ZDDP, being polar enough to adhere to metals more than Group II-IV oils but not so polar as to...
  4. J

    Had to show you guys this...Pennzoil Syn Euro

    I've seen that many times too in used oil containers that sat for months. Gravity very slowly causes the slightly more dense particles to settle to the bottom and intermolecular attraction causes them to agglomerate. The percent weight of insolubles that some UOAs report measures such...
  5. J

    Oil Fuel Dilution - Saturation Point?

    The rate of evaporation of fuel out of the oil is proportional to the concentration of fuel in the oil. That causes the fuel concentration to increase most rapidly when there is no fuel in the oil and over time, the concentration keeps increasing but at a slower and slower rate, until it...
  6. J

    Using HDEO's in Gasoline Engines

    I think there is some truth in Reason 1 about ZDDP types. Reason 2: I'm not sure what anti-foaming differences there are between HDEO and PCMO. Reason 3: I firmly believe he is correct that detergents and dispersants are formulated differently in HDEOs and PCMOs. However I am not sure I agree...
  7. J

    2015 Tacoma 15.6k OCI Amsoil SS 0W30

    You got your money's worth out of this oil. It did thicken some, based on the PDS showing 10.4 cSt viscosity at 100C. Is the engine staying clean inside from what you can see?
  8. J

    Cold start engine wear?

    Thank you Mr. Newton. That is all very rational.
  9. J

    Cold start engine wear?

    <div class="ubbcode-block"><div class="ubbcode-header">Quote</div><div class="ubbcode-body">Perfect example of misunderstanding of study results.</div></div> I don't see how that is the case when I examine my own thoughts and certainly don't see what I said that would indicate a lack of...
  10. J

    2003 Diamante, SHU 5W40 + 1/2 can MoS2, 7.8k mile OCI

    <div class="ubbcode-block"><div class="ubbcode-header">Originally Posted by demarpaint</div><div class="ubbcode-body">I'm far from an expert but Lead and Silicon stand out to me. I'd be checking the air filter assembly for sure, and the plumbing associated with it for unfiltered air entering...
  11. J

    Cold start engine wear?

    There have been many studies showing increased wear when the oil is cool or cold. There are a variety of potential causes, like fuel and water condensing on cylinder walls, increased acidic corrosive wear, anti wear additives being less active, ill-fitting parts due to dissimilar expansion...
  12. J

    Mobil 1 0w40 to become factory fill on Corvettes

    As I humorously read somewhere online one time, the way formulators prevent bubbles in oil is to add anti-bubble. ...„
  13. J

    Valvoline Restore & Redline Oil - Cleaning Ability

    That is impressive 330indy. My mom owned a 1998 BMW that had a lot of that red deposit in it. Mobil 1 5W-30 (wrong oil, by the way) did not clean it up, nor did one application of Auto-RX. I didn't expect one application of Auto-RX to clean up that much of a mess. If it had a chance, it...
  14. J

    is "1-decene, trimer, hydrogenated" PAO?

    It looks like the actual percentage of an ingredient cannot be outside of the percentage range in the SDS. It also looks like bulwnkl did not call anybody a liar.