The latest generation of Mercedes-Benz driving assistance systems was introduced with the premiere of the new S-Class in September 2020.
The driver is supported by numerous new or extended systems which now also come as standard in the EQS, the EQE and the new C-Class. How they work and how they can make driving more comfortable and safe, is explained in this video.
in this video we’re going to be discussing what happens when an engine has no oil. As a demonstration, we’ll be viewing an engine with and without oil running. This is the exact same engine on the left and the right, on the left with oil, and on the right without. Both engines will start at the exact same time, but the video on the right was filmed 24 hours after the video on the left, allowing for the engine to completely cool. This is a 212 cc air-cooled single-cylinder Harbor Freight engine.
There are five points we’re monitoring on each engine. Point one is the crankcase, below the level at which oil will rest. Point two is the top of the crankcase, where there obviously won’t be any oil resting near. Point three is the air-cooled cylinder bore. Point four is the exhaust pipe exiting the cylinder before entering the muffler, and point 5 is the valve cover. This is a pushrod style valve train with overhead valves.
Opening the crankcase reveals the permanent damage which occurred. First of all, look at the small amount of oil that didn’t quite make it out while draining. It’s quite dark, and this is after a 15 minute run with oil, and 15 minutes without, in a brand new engine. The oil which remained in the drained engine is clearly quite dirty, and actually it has quite a bit of metal content in it, as you can see reflecting as I move around the towel.
Examining further, I removed the connecting rod cap from the crankshaft. This is the bearing the crank rotates on. You can see the scored, less reflective surface of the cap. Indeed, you can see the scratches on the crankshaft as well. I would expect to see similar issues with the camshaft and cylinder bore as well.
What should you do if your car battery dies? Is it okay to jump the car and drive off, or is it better to use a battery charger, rather than relying on your alternator to charge the battery? This video will test various parameters of a car’s electric system to determine what effects will result from running with a dead battery, versus running with a charged battery. We’ll examine battery voltage (engine on and off), alternator voltage, alternator amps, and alternator temperature. Does a dead battery cause your alternator to overheat? We’ll find out in the video!
Note: If you’re stranded because of a dead battery, you should get your car jumped so you can get where you need to be. Obviously in emergency situations, do what’s safest for you, rather than what’s ideal for your car.
As Volvo Cars continues its mission to become fully electric by
2030, we thought it was the perfect time to update the classic driver’s ed
video with our electric future in mind. Welcome to EV Driver’s Ed 101,
where we’ll be covering everything you’ve ever wanted to know about
driving an EV and more, with a little help from the Volvo XC40 Recharge.
The fully-electric Audi Q4 e-tron is here to put luxury electric driving firmly within reach. Join The Daily Show’s Desi Lydic as she uncovers the next step in electric innovation. A premium electric car that boasts the first ever available AR head-up display found in any Audi and fast charging capabilities that’ll have you on the road within no time.
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