How will a $30 spectrographic analysis prove that the oil is "still good"?
He mentioned that the UOA's will be discussed in the next vid so I don't know how you could be disappointed. However, I suspect just based on the color* there's a fair amount of oxidation and the oil would not be suitable for automotive use.
My guess is TBN will be at the bottom. In the video he basically said that it's the additive pack which goes bad over time and implied a reduction in alkalinity.
That sounds like a bunch of nonsense, but maybe that's just me. The "additive pack" doesn't go bad over time, and it's really an alkaline reserve. Hydrocarbons without water are neither alkaline nor acidic, they are neutral. I'm not sure where he thinks these acidic bad actors are coming from without the products of combustion.
He said some additives have slightly acidic properties. Keep in mind he's talking oil that is 10-20 yrs old.
This^^^. Shake and pour.
Interesting to see the demonstration about Si anti-foaming agent fallout.
CO2 in the atmosphere, perhaps, assuming atmospheric contamination. Seems plausible it could form H2CO3.
The fact that some blenders specify a date and some don't, tells me that it's either not tested or not a big issue for them or the consumer. Granted there's too many variables to account for every situation. I imagine there's some bottles in auto parts/walmart stores that sit on shelves for quite a while, judging by the layers of dust. But if this was such a critical issue, I would imagine an expiration/best by date would be listed clearly on the bottle or have some legal jargon and just not in their FAQ section.
