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For a humorous and oddly interesting YouTube view on what happens to bad engines in cars, see the I Do Cars YouTube channel. Come for the oil starvation, stay

For a humorous and oddly interesting YouTube view on what happens to bad engines in cars, see the I Do Cars YouTube channel. Come for the oil starvation, stay for the newly installed inspection ports. On a good day, he'll get some parts to sell from each core. He also occasionally goes through the process of pulling usable parts from an entire junked car. https://www.youtube.com/@I_Do_Cars https://www.youtube.com/@I_Do_Cars

pjbk 2y ago
Yes! Enjoyable and I have learned a lot about how car engines work and are built watching it. And how some companies (cough - Audi - cough) intentionally overengineer their designs so much to boost service and repair cash flows.
hindsightbias 2y ago
I'll add: https://www.youtube.com/@TheCarCareNut https://www.youtube.com/@TheCarCareNut SUVs and smaller trucks are now almost universally moving to 4cyl and 6cyl turbos with iffy CVTs. The channels run by folks with greasy overalls are pretty uniform in saying these vehicles won't last like their predecessors (even the Toyotas).
- yareally 2y ago
  Is this a genuine sentiment or just people upset that their favorite vehicle won't have a massive gas guzzling engine anymore? There are a number of people that also dislike trucks with aluminum bodies, despite that aluminum alloys can be strong (aircraft use them all the time) and it keeps your truck from turning into a rust bucket after 5 years of snowy winters. Car ownership is not always a rational thing and people will defend some strange platforms based only on emotion. How are the CVTs in these trucks iffy compared to other CVTs? There's a number of reliable auto makers using CVTs for years, such as Subaru, Honda and even Toyota on their other vehicles. CVT transmissions have been in mass produced cars longer than most of us have been alive.
  - pfdietz 2y ago
    CVTs are also much cheaper to manufacture than traditional transmissions.
    - yareally 2y ago
      That doesn't alone make them terrible though. CVTs have less complexity, so they will be cheaper. Dependable cars have CVTs for reasons other than cheapness. For example, a dual clutch transmission is complex and expensive, but at the same time, I wouldn't call it better. There's tradeoffs in all types of transmissions. My car might have one, but if I were driving a truck, I don't think I would want a DSG.
      - pfdietz 2y ago
        Indeed, that was not a criticism.
    - jandrese 2y ago
      Which also makes them cheaper to replace, which is good because you will likely need to replace it at least once in the lifetime of the car.
  - Brian_K_White 2y ago
    Both turbos and cvts are genuinely a reliability downgrade. It's because of fundamental and unavoidable reasons in each case. This applies to all vehicles, old or new, including ones they've already been used in for years like how turbo is a standard part of practically all large deisels. "a number of reliable auto makers using CVTs for years" is an utterly valueless statement. It says, proves, disproves, or even merely indicates, nothing. There are countless reasons for any company to do anything, including for a "reliable" automaker to use a less-reliable part or design. Both turbos and cvts increase gas mileage. Simple as that. That one thing has become so important that it's now worth sacrificing other things to get it.
  - vel0city 2y ago
    CVTs (generally) rely on belts sliding on cones. With more weight, you need more torque, with more torque you get more wear on the internal components. This is a big reason why CVTs have historically targeted smaller cars instead of larger trucks. When it comes to motor reliability, generally speaking a smaller engine with higher compression running closer to its peak output all the time will have more wear than a slightly larger engine that doesn't have to run at as high of pressures and load percentage. Lower RPMs needed for the same power output means less friction on all the components in the motor. There's a lot of variances in that so it is not exactly a given. These kind of go away with more modern "eCVTs" which don't rely on belts and hybrid systems which can help even out that peak engine load challenge. But still, turbos will generally reduce your reliability. More moving parts, higher pressures, etc. The questions are, will the increased efficiency balance out the reduced reliability and will the motor reliability be the thing that does the car in at the end.

pjbk 2y ago

Yes! Enjoyable and I have learned a lot about how car engines work and are built watching it. And how some companies (cough - Audi - cough) intentionally overengineer their designs so much to boost service and repair cash flows.

hindsightbias 2y ago

I'll add: https://www.youtube.com/@TheCarCareNut https://www.youtube.com/@TheCarCareNut SUVs and smaller trucks are now almost universally moving to 4cyl and 6cyl turbos with iffy CVTs. The channels run by folks with greasy overalls are pretty uniform in saying these vehicles won't last like their predecessors (even the Toyotas).

yareally 2y ago
Is this a genuine sentiment or just people upset that their favorite vehicle won't have a massive gas guzzling engine anymore? There are a number of people that also dislike trucks with aluminum bodies, despite that aluminum alloys can be strong (aircraft use them all the time) and it keeps your truck from turning into a rust bucket after 5 years of snowy winters. Car ownership is not always a rational thing and people will defend some strange platforms based only on emotion. How are the CVTs in these trucks iffy compared to other CVTs? There's a number of reliable auto makers using CVTs for years, such as Subaru, Honda and even Toyota on their other vehicles. CVT transmissions have been in mass produced cars longer than most of us have been alive.
- pfdietz 2y ago
  CVTs are also much cheaper to manufacture than traditional transmissions.
  - yareally 2y ago
    That doesn't alone make them terrible though. CVTs have less complexity, so they will be cheaper. Dependable cars have CVTs for reasons other than cheapness. For example, a dual clutch transmission is complex and expensive, but at the same time, I wouldn't call it better. There's tradeoffs in all types of transmissions. My car might have one, but if I were driving a truck, I don't think I would want a DSG.
    - pfdietz 2y ago
      Indeed, that was not a criticism.
  - jandrese 2y ago
    Which also makes them cheaper to replace, which is good because you will likely need to replace it at least once in the lifetime of the car.
- Brian_K_White 2y ago
  Both turbos and cvts are genuinely a reliability downgrade. It's because of fundamental and unavoidable reasons in each case. This applies to all vehicles, old or new, including ones they've already been used in for years like how turbo is a standard part of practically all large deisels. "a number of reliable auto makers using CVTs for years" is an utterly valueless statement. It says, proves, disproves, or even merely indicates, nothing. There are countless reasons for any company to do anything, including for a "reliable" automaker to use a less-reliable part or design. Both turbos and cvts increase gas mileage. Simple as that. That one thing has become so important that it's now worth sacrificing other things to get it.
- vel0city 2y ago
  CVTs (generally) rely on belts sliding on cones. With more weight, you need more torque, with more torque you get more wear on the internal components. This is a big reason why CVTs have historically targeted smaller cars instead of larger trucks. When it comes to motor reliability, generally speaking a smaller engine with higher compression running closer to its peak output all the time will have more wear than a slightly larger engine that doesn't have to run at as high of pressures and load percentage. Lower RPMs needed for the same power output means less friction on all the components in the motor. There's a lot of variances in that so it is not exactly a given. These kind of go away with more modern "eCVTs" which don't rely on belts and hybrid systems which can help even out that peak engine load challenge. But still, turbos will generally reduce your reliability. More moving parts, higher pressures, etc. The questions are, will the increased efficiency balance out the reduced reliability and will the motor reliability be the thing that does the car in at the end.