Originally Posted By: SR5
Originally Posted By: BikeWhisperer
Originally Posted By: cb_13
I know marketing tells us Synthetic is best followed by Synthetic blend and conventional. But if PQIA's numbers for 5w20 and 10w30 are correct isn't PYB better than any synthetic blend and on par with many synthetics? I know there's more to an oil than NOACK but the add pack looks good, VI seems to be even with other oils of the same grade and NOACK is amazing. I am by no means an expert so maybe there's something I'm missing. If so hopefully someone can point it out.
I was actually thinking the same thing. A company slaps "Synthetic" on their product and we assume that means it is a superior product to conventional. But in the US, the term "synthetic" is pretty meaningless...like "natural" on food products.
The PQIA numbers along with the UOA's I've seen for PYB would indicate that it may be as good or even better than some of the oils labeled as synthetic out there. And if that is the case, then PYB would be one of the best values on the oil market...conventional, blend, or synthetic. IDK about extended OCI's but for standard OCI's I would probably use it over many off-brand group III oils.
I agree, the numbers for PYB followed by QSGB really standout. They both have a noack well under 10% with every other oil tested well above 10%. Plus PYB has a TBN of almost 10, the highest tested.
http://www.pqiamerica.com/Feb2014/consolidated5w20ALL.html
I've seen synthetics with higher noack volatility % than these two.
PYB., QSGB
TBN 9.46, 7.87
Noack 6.5 %, 7.8
Zinc 857 ppm., 812
Moly 272 ppm., 118
Boron 119 ppm., 230
Vis. Index 155, 156
Hard to find a better combination of figures than these two.
The lines between conventional and synthetic have become very blurred, especially in the last two API ratings.