]PYB SN/GF-5 is the highest-moly oil out there.[/b] As a bonus, since Infineum is an Exxon-Mobil/Shell company, chances are that the PYB moly is the
Infineum's trinuclear kind.
I very much doubt Pennzoil is using the trinuclear moly in their conventional oil for a number of reasons but mainly because the concentration would not need to be as high.
It's a high moly oil but certainly not the highest moly oil out there. I'd be more inclined to believe that PU 5W-20 with 44 ppm of moly is the trinuclear type and therefore technically an effectively higher moly concentration.
But PYB has a good DI package and if this oil can be acquired cheaply, PU 5W-20 doesn't offer much over it. That's one reason why I've always considered 5W-20 primarily dino grade. If you want to up-grade to a synthetic oil go for a 0W-20 and get the benefits of a higher VI.
I've always considered the 5W-20 primarily a dino
I disagree. Last year I tried both Pennzoil Platinum GF-5 and Yellow Bottle GF-5 in the 5W-30 variety. The difference in moly between the two was obvious from how much more smoothly the car took of with the Yellow Bottle. Yellow Bottle has more of the same moly stuff. Try it and you will see the difference yourself.
Then, you can ask, why do they put more moly into the Yellow Bottle? The reason is not for the new-oil but the used-oil performance. Synthetics deteriorate slower than conventionals and maintain friction better with used oil. That's why you need more moly for the conventional -- for used-oil fuel economy.
It's not true that 50 ppm moly is enough with the trinuclear moly. While you get a lot of benefits with even 50 ppm trinuclear moly, full benefits actually happen around 200 ppm. See the presentation linked. So, the Yellow Bottle seems to have the optimal amount of trinuclear moly. Toyota 0W-20 GF-5 seems to have 100 ppm trincuclear moly for example -- better than Mobil 1 but worse than PYB.
Another reason why the synthetics have less moly is the price. Synthetics are already very costly to make and moly is the most expensive additive in the engine oil. If they put too much moly in a synthetic oil, the price becomes so high that no one can afford it or they can't make any money out of it.
I feel that my engine is running smoother everyday, with 500 miles being approached on oil. Probably the moly film on my wear surfaces is thickening with every mile. I don't think you can find any better oil than the GF-5 variety of the PYB. People pay a lot of money for moly additives, and it's not even for the oil-soluble organic kind. You won't get any more moly than with PYB. And you're getting it without any hassle.
Get the PYB GF-5 and have a blast! Don't be surprised if it performs better than your favorite synthetic!
I got this VOA today for the Pennzoil Yellow Bottle (PYB) 5W-20 SN/GF-5. Moly is very high, as in the PYB 5W-30 SN/GF-5. The additive package seems to be identical within measurement error to that of PYB 5W-30 as reported at PQIA.
PYB SN/GF-5 is the highest-moly oil out there. As a bonus, since Infineum is an Exxon-Mobil/Shell company, chances are that the PYB moly is the Infineum's trinuclear kind. Since nothing beats trinuclear moly in friction reduction, antiwear, antiscuff, as well as cylinder-lining coating for oil-consumption reduction, this oil is hard to beat!
The starting TBN is also almost 9.0 and very strong.
Discuss!
