Why the special engine oil for Sprinter Vans? Is 229.52 different than 229.51?

229.52 is much more difficult to find at auto parts stores and may require going to your Mercedes dealership where it's twice the cost of other synthetic oils. 

"lower levels of Sulphated Ash, Phosphorous and Sulphur (SAPS) in the engine lubricant. SAPS are important components in the formulation of a lubricant, providing wear protection and cleanliness performance amongst many other benefits. However, if the chemistry within a lubricant contains SAPS above OEM-specified limits, the levels of ash created during combustion can eventually completely block the filtration channels [in the diesel particulate filter] 

requiring DPF replacement or cleaning and incurring large expense for the vehicle owner." 

"Marketed by Daimler as "Low SPAsh multigrade service engine oils," approved MB 229.52 lubricants must deliver at least 0.7% fuel economy improvement compared to the MB 229.51 and MB 229.31 specifications. To achieve this, lubricants must have improved cold flow properties to reduce friction within the engine, allowing oil to flow effectively at start-up. This lowers the vehicle's fuel consumption by increasing efficiency

MB 229.52 specification

https://360.lubrizol.com/2020/Understanding-the-Daimler-MB-229,-d-,52-Specification

Auto Paint

https://youtu.be/b_hgPinCZks

Faster, stronger, lighter, better

ingenious method to get straight electric wires over electric trains.

How to suspend a very straight wire above an electric train.

 https://youtu.be/8MCfWPpJhXM

Largest object ever moved

https://youtu.be/LC-1tSS84fE?t=204

3:24 "…the heaviest object that has ever been moved from one place to another in human history with a water displacement of 1.5 million tons"

How Cotton is Processed in Factories

I love the names of the machines

1:28 hot box

1:41 wad buster

2:41 gin stand

3:48 trapper

https://youtu.be/QHgNoSYlhYs

How Walmart Is Betting Big On Stores To Catch Amazon

https://youtu.be/vAL2YtZRiIY

Walmart has the advantage of so many stores, within 10 miles of 90% of all Americans, allowing more rapid delivery than Amazon in many remote or sparsely populated regions. 

Walmart is trialing a "delivered directly to your refrigerator" service complete with a live camera feed of the in-home delivery to ensure security. 

And Walmart is launching drone delivery up to 10 pounds in several states. 

Tie down straps trick

https://youtube.com/clip/UgkxrPCNL72AHozdp7p6yzK_Vlb6OVdTbsj1

Click link above for exact clip in video. 

Trick for securing truck bed tie-down straps easily

(A clip from https://youtu.be/yckaGOV-EB4 at 5:12)

Mark Cuban’s Low-Cost Drug Company

https://youtu.be/qw2nx-I-jAA

https://costplusdrugs.com/

Liminal spaces

What are liminal spaces, non-places, and junk spaces? The architect explains.

https://youtu.be/pL3bqQRLvsQ

Artificial Intelligence Just Designed An Enzyme That Eats Plastic

https://youtu.be/omo0rE4qATY

They used AI to study 19000 proteins and determine what contributes to stability. 

Then they modified an existing bacterial plastic-suggesting enzyme to make it more temperature resilient. It breaks down the hard-to-recycle PET plastic and recovers 94% of the building blocks with which new plastic can be made. 

Why rollover accidents occur

I just realized a reason why some rollover accidents occur in what would seem to be a minor impact. 

https://youtube.com/clip/UgkxViAsSo8l1B7FCRDc-FDTVnQc6fQ3vtT5 

This clip shows a car's right front tire impacting the left rear wheel of another, and riding up over it into a rollover. 

The impacting car likely has his brakes locked before the impact, and the car he strikes has wheels turning, to with the rear part the struck tire moving upward. 

If the front car is moving fast, the rear part of his rolling tire would be moving quickly upward when impacted, and the good traction between two tires squishing together propels the striking car into the air. 

In this clip, though the video is not as clear as the first, you can see how violently the impacting car is thrown upwards. 

https://youtube.com/clip/UgkxYyy_buvZkxh-ovvmGxbTpP71FMSbO3Au

Who owns all the stocks?

This statistic continues to amaze me, and explains why many stock price moves are such a sudden selloff. 

The wealthiest 10% of American households now own 89% of all U.S. stocks

The top 1% gained more than $6.5 trillion in corporate equities and mutual fund wealth during the Covid-19 pandemic

https://www.cnbc.com/2021/10/18/the-wealthiest-10percent-of-americans-own-a-record-89percent-of-all-us-stocks.html

Older leading men vs their women in movies

"On average, the age difference between 1984–2014 is 4 1/2 years... " 

And, it's more exaggerated if the director is male than female: 

"On average, the male leads in films directed by men were 4.53 years older than their female co-stars. In films directed by women, the male
leads were 4.16 years older than the female leads.

https://womenandhollywood.com/study-how-much-older-are-male-leads-in-romantic-films-than-their-female-co-stars-43ddef908f19/

"Tom Cruise's leading ladies in the last 10 movies he has produced and starred in, the average age gap is about 16.5 years. But for Top Gun: Maverick, Tom Cruise's love interest is played by the exceedingly talented Jennifer Connelly, who is "only' eight years younger than he is."

https://goat.com.au/entertainment/top-gun-maverick-finally-gives-tom-cruise-an-age-appropriate-leading-lady/?amp

The Rich and the Rest of Us | Hidden Brain Media

https://hiddenbrain.org/podcast/money-2-0-the-rich-and-the-rest-of-us/

The uber-rich develop a distrust about those they interact with - 

18:27 "... If you're a wealthy person, you're more trusting of the people you pay to be in your service than those you don't. With your family, you might have a King Lear problem - which of my family love me, and which are out to get something? But at least when you're having a transactional relationship with an employee, at least the boundaries are clear. You're paying them for certain services, and you can assess whether they are giving you those services at the standard you require - if they're not, you fire them; if they're doing a good job you keep them on. There's a simplicity to that which is not present in emotional relationships." 

23:39 looked at millions of flights to see what predicted incidents of air rage...23:51 in planes in which there was a first-class cabin, incidents of air rage were several times more likely to happen. Which suggests that to witness that [income] inequality seems to have some kind of psychological impact on people that really ramps up their disruptive behavior. 23:34 Some planes don't start boarding with their first-class passengers, and that makes a difference... If you don't have to walk past the first-class cabin, there's a much lower incidence of air rage. 

43:52 "When people are economically segregated, when you have the very rich living behind walls in gated communities, it might be psychologically easier on the middle class and poor not to see that, but on the other hand, it creates a greater feeling of distance between the haves and the have-nots...that leads to increased polarization and lower levels of trust." 

Frog Defends Eggs From Wasps | Planet Earth

https://youtu.be/_9EzJtx4cyw

The unborn hatchlings can sense danger and wiggle out of their egg early. Amazing.