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"peratures can shorten the life of your engine by stripping away oil from the engine’s pistons and cylinders — two critical components that help your engine run

"peratures can shorten the life of your engine by stripping away oil from the engine’s pistons and cylinders — two critical components that help your engine run." Nonsense, if the oil pump and engine are built correctly and working as intended this does not cause librication not to work correctly. How many cabs would die early because they are idling in traffic all day? Your personal cars engine is not a formula one cars engine that survives one weekend of driving.

hprotagonist 4y ago
> How many cabs would die early because they are idling in traffic all day? and cop cars? Approximately all of them. This is well known. https://old.reddit.com/r/MechanicAdvice/comments/4pjnco/how_does_idling_negatively_effect_police_vehicles https://old.reddit.com/r/MechanicAdvice/comments/4pjnco/how_...
- LinuxBender 4y ago
  I think these discussions are risky because of causation/correlation. Cabs, police cars, UPS/Fed-Ex trucks need engine/transmission rebuilds sooner because they stop/start every day all day long. For example a Fed-Ex panel truck with a Cummins engine and Allison drive train will last for about 1 million miles without rebuild if used as a light duty such as a plumber or electrician or personal vehicle. Used as a Fed-Ex delivery vehicle it will need a rebuild at around 410K to 450K miles. Idling is not causing the engine to need a rebuild at 40% of it's normal lifespan, its shutting it off and starting it over and over all day long.
  - BenjiWiebe 4y ago
    And the way delivery drivers drive... Our UPS guy drives in a way that makes us surprised his vehicle lasts for a week...
sokoloff 4y ago
Note that, for cost reasons, F1 teams are limited to 3 engines per driver for the season, with penalties for starting grid positions for exceeding this figure.
- sschueller 4y ago
  Right but that doesn't mean they can't rebuild the engine for each race weekend.
  - AntiRush 4y ago
    The F1 engines are sealed by the FIA. They are not rebuilding them and doing so would result in disqualification.
    - sschueller 4y ago
      Thanks, I didn't know this.
    - gonzo 4y ago
      You can’t use the engine. It’s not a DQ. —- Article 23.3d 2018 Sporting Regulations After consultation with the relevant power unit supplier the FIA will attach seals to each of the relevant components within the power unit prior to them being used for the first time at an Event in order to ensure that no significant moving parts can be rebuilt or replaced. Within two hours of the end of the post-race parc fermé exhaust blanking plates (with one 10mm diameter inspection hole per cylinder) and further seals will be applied to all used power unit components in order to ensure that they cannot be run or dismantled between Events. Upon request to the FIA these additional seals will be removed after the start of initial scrutineering at the next Event at which the power units are required. All such power units must remain within the team’s designated garage area when not fitted to a car and may not be started at any time during an Event other than when fitted to a car eligible to participate in the Event. 2018 F1 Sporting Regulations 17/70 19 December 2017 ©2017 Fédération Internationale de l’Automobile e) If any of the FIA seals are damaged or removed from the relevant components within the power unit after they have been used for the first time those parts may not be used again unless they were removed under FIA supervision.
jcampbell1 4y ago
I worked at the engine plant in the early 2000s that made the 4.6l v8 that was in Crown Victoria for cop cars and cabs. The cop/cab version of the engine was different in that it had a highly polished timing chain for exactly this reason.
- gooseyman 4y ago
  This is super interesting as a person who is interested in cars, but by no means a mechanic. What does polishing the timing chain accomplish? Or is it more “accurate” timing?
  - wpearse 4y ago
    Smoother surfaces, less friction, less wear, increased longevity.
    - sschueller 4y ago
      So generally a better engine. Why aren't all that way?
      - gonzo 4y ago
        Cost
  - sammalloy 4y ago
    > What does polishing the timing chain accomplish? Or is it more “accurate” timing? I’m also curious, in terms of idling and the longevity of the engine. It has to be said, those old Crown Vics are still on the road.
    - gonzo 4y ago
      Likely the cop/cab version uses a roller timing chain, which is lower friction that the typical stock chain.
  - 4y ago
tzs 4y ago
> How many cabs would die early because they are idling in traffic all day? Isn't the article just talking about idling immediately after starting an engine on a cold day?

hprotagonist 4y ago

> How many cabs would die early because they are idling in traffic all day? and cop cars? Approximately all of them. This is well known. https://old.reddit.com/r/MechanicAdvice/comments/4pjnco/how_does_idling_negatively_effect_police_vehicles https://old.reddit.com/r/MechanicAdvice/comments/4pjnco/how_...

LinuxBender 4y ago
I think these discussions are risky because of causation/correlation. Cabs, police cars, UPS/Fed-Ex trucks need engine/transmission rebuilds sooner because they stop/start every day all day long. For example a Fed-Ex panel truck with a Cummins engine and Allison drive train will last for about 1 million miles without rebuild if used as a light duty such as a plumber or electrician or personal vehicle. Used as a Fed-Ex delivery vehicle it will need a rebuild at around 410K to 450K miles. Idling is not causing the engine to need a rebuild at 40% of it's normal lifespan, its shutting it off and starting it over and over all day long.
- BenjiWiebe 4y ago
  And the way delivery drivers drive... Our UPS guy drives in a way that makes us surprised his vehicle lasts for a week...

sokoloff 4y ago

Note that, for cost reasons, F1 teams are limited to 3 engines per driver for the season, with penalties for starting grid positions for exceeding this figure.

sschueller 4y ago
Right but that doesn't mean they can't rebuild the engine for each race weekend.
- AntiRush 4y ago
  The F1 engines are sealed by the FIA. They are not rebuilding them and doing so would result in disqualification.
  - sschueller 4y ago
    Thanks, I didn't know this.
  - gonzo 4y ago
    You can’t use the engine. It’s not a DQ. —- Article 23.3d 2018 Sporting Regulations After consultation with the relevant power unit supplier the FIA will attach seals to each of the relevant components within the power unit prior to them being used for the first time at an Event in order to ensure that no significant moving parts can be rebuilt or replaced. Within two hours of the end of the post-race parc fermé exhaust blanking plates (with one 10mm diameter inspection hole per cylinder) and further seals will be applied to all used power unit components in order to ensure that they cannot be run or dismantled between Events. Upon request to the FIA these additional seals will be removed after the start of initial scrutineering at the next Event at which the power units are required. All such power units must remain within the team’s designated garage area when not fitted to a car and may not be started at any time during an Event other than when fitted to a car eligible to participate in the Event. 2018 F1 Sporting Regulations 17/70 19 December 2017 ©2017 Fédération Internationale de l’Automobile e) If any of the FIA seals are damaged or removed from the relevant components within the power unit after they have been used for the first time those parts may not be used again unless they were removed under FIA supervision.

jcampbell1 4y ago

I worked at the engine plant in the early 2000s that made the 4.6l v8 that was in Crown Victoria for cop cars and cabs. The cop/cab version of the engine was different in that it had a highly polished timing chain for exactly this reason.

gooseyman 4y ago
This is super interesting as a person who is interested in cars, but by no means a mechanic. What does polishing the timing chain accomplish? Or is it more “accurate” timing?
- wpearse 4y ago
  Smoother surfaces, less friction, less wear, increased longevity.
  - sschueller 4y ago
    So generally a better engine. Why aren't all that way?
    - gonzo 4y ago
      Cost
- sammalloy 4y ago
  > What does polishing the timing chain accomplish? Or is it more “accurate” timing? I’m also curious, in terms of idling and the longevity of the engine. It has to be said, those old Crown Vics are still on the road.
  - gonzo 4y ago
    Likely the cop/cab version uses a roller timing chain, which is lower friction that the typical stock chain.
- 4y ago

tzs 4y ago

> How many cabs would die early because they are idling in traffic all day? Isn't the article just talking about idling immediately after starting an engine on a cold day?