Recent content by JAG

Thank you!

Originally Posted by c5z06 Sounds too good to be true honestly. Any harm in running that normally ? I've never read about any downsides, other than cost, when used at an appropriate treat rate. Here is a thread about it with a lot of links to literature...

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...

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 particles'...

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 reaches...

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...

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?

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

Quote Perfect example of misunderstanding of study results. 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 understanding. Anyhow, that's not worth further discussion since my level of understanding of the tests...

Originally Posted by demarpaint 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 the engine. +1

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...

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

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 probably...

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.

Yeah, 1.7 cSt is way off.