If folks back in the day (I was 7-years old then…) used this as a good idea on how to care for their car, then that explains why so many have been scalded from boiling hot radiator coolant by popping the cap on a freshly run engine… (25-seconds in the video…)
Later on in the video when the attendant checked the oil brought back memories of my first car ('54 Dodge…). I bought it off my neighbor who was selling it because it was hard to start in the New York winters… As it turned out, the local garage that did the oil changes used straight 30W oil with the 10-30W so it was had to start and it ensured them of lots of calls to go jump batteries…
The same garage, when they did oil changes, punctured the oil can in the bottom, and then put that empty can on a rack to drain every last drop out of it… Then when they checked to oil of a car at the pump, the first check was to see if the oil level was full, if it was, they wiped the stick and “re-checked” the level, but this time, they wrapped a finger around the stick to keep the stick from being fully inserted and the stick would come back showing a quart low. They were “very professional” and they would show the customer the dip stick. If the customer told them to add a quart, they would grab one of the cans off the top of the oil rack (46-seconds in the video…) and those cans on top were the empty cans from the shop, with the hole punched in the bottom… They would puncture the can on the top and carefully wrap an oil cloth over the can “to prevent spills…” (actually to cover the hole in the bottom…) it looked all so professional… They then “re-checked” the oil level and miraculously your oil level would now be fine…
If a customer should pick up one the empty cans in the rack, “old John” would curse up a storm at his jockeys for “putting” an empty can back in the rack.
But still a fun video to watch…
When I was a gas jockey–back in The Good Old Days 
–overheating of cars was not uncommon. The station where I worked was the first one that people would encounter after exiting the Lincoln Tunnel and the stop & go traffic in that area.
Our policy was to check the oil & wash the windshield, but we also checked the radiator if a customer requested it. One very hot summer day, a customer requested a radiator check on his '59 Pontiac, and one of my co-workers complied, only to be hit in the head with the radiator cap when it flew off in a torrent of steam. In addition to the knock on his forehead, his right forearm was scalded pretty badly. It turned-out that the car had been overheating, but the driver chose to NOT mention it before asking my friend to check his radiator.
My friend had to be taken to the ER for his scalded forearm to be treated, and by the end of the day, the boss had posted a sign stating, “No radiator checks. Please don’t even ask”.
Edited to add: If someone did ask for a radiator check after that sign was posted, the boss’s policy was to direct them to the shop area, where they were told that they would have to let the vehicle sit for at least 20 minutes, and then the boss would (very carefully) open the radiator cap.
The station I worked for placed empty oil cans in the pump island displays to thwart theft.
There were rumors of attendants “short sticking” the dipstick and acts of charlatan theater, but we did not engage it that. Different culture.
I worked at two different Mobil stations in the 50s. The first guy was a very competent mechanic and as honest as the day is long. The second guy was an incompetent crook who paid his gas jockeys a nickle for every quart the sold and showed them how to “short stick” with their thumb.
At the first place, I was eventually allowed to do tuneups, brake jobs and repair tires both tube types and tubeless.
WE cleaned and regapped your spark plugs for 25 cents at 5000 miles and for $1.25 installed new ones at 10,000 miles. A tune up included replacing plugs, points and condensor, inspected or replacing the distributor cap and rotor.. We checked the dwell ans adjusted the timing and adjusted the carb ans set the idle speed.
Did overfilling oil not harm the engine? Or an extra quart made no difference?
Can’t remember our Ford station wagons’ oil capacities.
But friend’s GMCarry-All’s toilet paper oil filter kepthe oil looking new!
Wow! You mean having to add a quart of oil now and then is a normal thing and not a sign of something wrong? 
So that ahour of Cah Talk was not a total waste of time, I checked our emergencyehicles while listening to Tom and Ray.
The Lexæ never needed oil between 7.5K oil changes.
Walmart has 12-quart boxes of Mobil1 0W-20 full synthetic.
Back in the day, those old lead burners did not have vapor recovery systems so the worse case was a little bit of splash back when the gas filled the neck.
Today those same 7 quarters will get you 19 gallons of gasoline!
I meant unscrupulous gas station people adding another quart of oil to a crankcase with proper oilevel.
In myehicles I never allowed anyone to check anything.
But Colorado has had self-service gas since the 1960s.
Did you not understand that was about selling unneeded oil ?
I you were lucky, they just charged yyou but did not actually put any oil in. I refused to do it and quit not long afterward.
I remember those days. Mainly 1958 and later. The gas jockey was a family friend and brother of the owner and never would have cheated anyone. Our main concern was the greasy rag cleaning the windshield. Now the towing contract with AAA was another whole issue.
At one point, the station manager had a competition to see who could “sell” the most oil changes to people coming in for a fill-up. IIRC, I think that the winner would get $10.
When I saw that he was going to use a suction pump, rather than actually draining the oil, I decided that I wasn’t interested in pushing oil changes on unwitting customers. Not many oil changes were sold, and that one promotion was the only time that we were urged to “push” oil changes.
The station I worked at in '72-'76 did most kinds of mechanical work, I don’t remember anyone trying to short-stick someone for oil, but there were a couple of guys who might have done it. We got a commission on everything we sold. Loved those folks needing tires!
Well, you can chock one this up… I admit, I must have been sniffing to many gas fumes… Some how I read that to mean overfill the gas tank and damaging the vapor recovery systems…
Later I added “oil”.
For long distance stat bloodeliveries I fill the RX350h gas tank almost to the filler tube opening.
If I am ruining the vaporecovery system, would a light appear?
Thank you
Filling a Lexus RX350h almost to the filler tube (or “topping off”) can flood the Evaporative Emissions (EVAP) system. When you are filling your gas tank and the dispenser handle clicks off, stop filing the tank, you are only putting a small amount extra into the filler tube.
If you over fill your tank trying to squeeze in a few more miles between fill ups, Liquid Gasoline can enter the charcoal canister, causing significant component failure and triggering the check engine light.
This repair can cost hundreds of dollars and is generally not covered by warranty.
So, how will you feel if the Engine Light turns on just as you are starting out a Lifesaving Blood Run…?
Might be better to carry a spare gas can instead, in a safety can of course. Can’t believe you get more than a half gallon in the filler tube.