I’m guessing they have a bunch of oil squirters engineered into the design but seems to me that constantly letting oil drain into the crank case while sitting then firing up again is going to cause a short life for these engines.
I’ve only riden in two vehicles that have this idiotic feature but they could both be disabled after the initial startup.
For people where >3 out of 4 stop sign encounters are uncontested, the feature is idiotic because not only it slightly wears out the starter, but shutting the engine off and immediately turning it on burns more fuel than letting it spin for those 0.5 extra seconds worth of power, and I doubt the catalytic converter feels that little difference.
Granted, I regularly see a few cars idling while their driver/passenger is buying cigarettes and it drives me nuts, but that has little to do with the start-stop system itself (and that *little* involves them disabling it).
Modern oils and modern cylinder lining makes this a non-issue.
You’re more likely to have a modern car with bad rings as they chase fuel economy numbers. Honestly, a hybrid is a very solid choice anymore. Lifts the burden of the gas engine having to be hyper-efficient and eases the extreme tolerances required to get there.
Shame that there are very few fun hybrids, crazy expensive things don’t count.
Infiniti made an m35h that actually had more power than the gas version and it got better mileage. Granted, it is a porky sedan, but that thing would still haul its fat ass.
Oil isn’t the problem, my car will turn on again before too much oil drains out of the engine and oil pressure sinks too low. Cooling is, interstingly, so they switched to an electric water pump for cooling - it will stay running during auto off so you don’t get too hot temperatures in the turbo for example. (4cyl 2l engine has a turbo)
There’s quite a bit of tech going into auto off since it first appeared. (Heh, my first car in 1989 had an aftermarket start stop switch to stop the engine at the traffic light - i never used it except once or twice for fun - still one cylinder exploded one day on the Autobahn)
I’m guessing they have a bunch of oil squirters engineered into the design but seems to me that constantly letting oil drain into the crank case while sitting then firing up again is going to cause a short life for these engines.
I’ve only riden in two vehicles that have this idiotic feature but they could both be disabled after the initial startup.
Idling motors waste fuel and because the catalytic converter is not hot enough, pollute at huge levels.
What is idiotic is people who idle for hours.
In USA metropoles during rush hours, maybe.
For people where >3 out of 4 stop sign encounters are uncontested, the feature is idiotic because not only it slightly wears out the starter, but shutting the engine off and immediately turning it on burns more fuel than letting it spin for those 0.5 extra seconds worth of power, and I doubt the catalytic converter feels that little difference.
Granted, I regularly see a few cars idling while their driver/passenger is buying cigarettes and it drives me nuts, but that has little to do with the start-stop system itself (and that *little* involves them disabling it).
Modern oils and modern cylinder lining makes this a non-issue.
You’re more likely to have a modern car with bad rings as they chase fuel economy numbers. Honestly, a hybrid is a very solid choice anymore. Lifts the burden of the gas engine having to be hyper-efficient and eases the extreme tolerances required to get there.
Shame that there are very few fun hybrids, crazy expensive things don’t count.
Infiniti made an m35h that actually had more power than the gas version and it got better mileage. Granted, it is a porky sedan, but that thing would still haul its fat ass.
Stop-start is not about fuel economy, it’s about emissions. Idling is very dirty.
We’re defining fun very differently. My prius has ridiculous low end torque thanks to those electric motors.
Oil isn’t the problem, my car will turn on again before too much oil drains out of the engine and oil pressure sinks too low. Cooling is, interstingly, so they switched to an electric water pump for cooling - it will stay running during auto off so you don’t get too hot temperatures in the turbo for example. (4cyl 2l engine has a turbo)
There’s quite a bit of tech going into auto off since it first appeared. (Heh, my first car in 1989 had an aftermarket start stop switch to stop the engine at the traffic light - i never used it except once or twice for fun - still one cylinder exploded one day on the Autobahn)