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A better oil may compensate for poor mechanical design, but oil cannot fix a mechanical problem.

Fair enough, but what I posted is still up on their website.

Is it...? This is what's on Carquest website... http://www.carquestprofessionals.com/filters/pdf/Premium-Oil-Filters-Shell-Sheet.PDF

The carquest premium is 99% at 30 microns. Is there any good filters reporting decent filtration at 20micron these days without questionable construction?

So, what is a safe bet these days as far as filtration efficiency and construction?

I found that AGMs sit on the shelf a while because they are significantly more expensive...so that would automatically be questionable. But if what you're saying is true and it has a 12/24 sticker then that's surprising. Your point is spot on, don't buy a battery without testing voltage.

While I agree concentrate is generally a better choice, I disagree that 60% coolant/40% water is desired. It lowers the freezing point, true, but 50/50 is -34F which is more than sufficient for 98+% of the US population. And water is better for heat transfer, so any benefit on boiling point...

To the original point, yes it seems color options have been drastically reduced. This was a covid/supply chain effect initially but has remained for reasons noted already. What's more annoying is that lower end cars have practically zero options for interior color/type.

Just to be clear Pearl refers to pearlescent pigment which is usually achieved with mica as the primary base material. It is legitimately more expensive to produce.

I think he's saying he doesn't know and you won't find out. So, guess away... Or did you just want to hear "because inflation" or "because corporate greed" bah humbug.

0.1-1% Trade Secret alkylphenol polyoxyalkyl alkylamine

NGK says Iridium IX 40-50k, NGK Laser Iridium 80-100K. So, it can depend significantly. But you can probably get more than either figure if no other issues are present.

I guess it remains to be seen what is good enough and what is beyond overkill... Some people think Top Tier Gasoline is unnecessary. Some people think Fuel system additives are unnecessary at some recommended interval. And then on the extreme you have some folks running an additive with every...

Gumout = 70drops, Techron after reformulation may be 55drops...that confirms what had been noticed on here that Techron has reduced concentration in the last several years. Techron still recommend a higher dosage of 1oz/gal, whereas Gumout and Redline are more in line at maintenance dose of...

They make a larger bottle for the parts stores that is diluted, so this covers them both. The 6oz bottle I believe is in the upper range 25-30%.

But they do recommend a very high dosage. 1oz/gal at that concentration of PEA is a relatively high concentration of PEA/gal. The old concentration and dosage recommendation might have been excessively high.

The Synpower being API SP will be max 800ppm Phosphorous which translates to maybe 900ppm Zinc. Of what you mentioned I would probably go with VR1.

I've run Continental True Contact tires twice for greater than 60k miles, i can't understand why you'd get vastly different performance.

GTL and other base stocks can be used to make more or less equivalent blends. So that is not the difference here.

Sorry, I meant the other way around, why does 0W-20 have lower Noack Exactly 0W-20 should have higher Noack based on that, but does not.