7eregrine
The man, the myth, the legend
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- Land of Cleve
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- 2016.5 CX5
I don't wait for the blue light to go off.
Nobody waits that long to drive off. I think you misread something.
I don't wait for the blue light to go off.
Here in the northeast its been getting colder and colder lately and have noticed that the blue light for cold engine is on a lot longer than usual. As expected, it does take a lot longer to have warm air coming out the vents as well as high RPMs and limited power when accelerating.
How long do you guys wait until driving when you start the car from a cold start in the mornings?
This is also what I do, regardless of outside temps. Never any good to put an AT in gear w/ the RPMs way up.
Unless below freezing, there is no need to warm up your car with fuel injection. And, even then, just a minute or so.
https://www.popularmechanics.com/ca...ng-up-your-car-in-the-cold-just-harms-engine/
https://www.roadandtrack.com/car-culture/videos/a30249/why-you-shouldnt-warm-up-your-car/
Tim
Engines with electronic fuel injection have sensors that compensate for the cold by pumping more gasoline into the mixture. The engine continues to run rich in this way until it heats up to about 40 degrees Fahrenheit.
"That's a problem because you're actually putting extra fuel into the combustion chamber to make it burn and some of it can get onto the cylinder walls," Stephen Ciatti, a mechanical engineer who specializes in combustion engines at the Argonne National Laboratory, told Business Insider. "Gasoline is an outstanding solvent and it can actually wash oil off the walls if you run it in those cold idle conditions for an extended period of time."
We 2019 owners don't have the light. Instead the first 1/2 inch of the temp gauge has blue markers to denote a cold engine.
Some of the stuff in these articles bear quoting:
So the Mazda manual's instructions to let the car warm up for 10 seconds (to build up the oil pressure) and then start driving (to warm it up faster so the ECU leans out the fuel mixture sooner) seem to be good advice...and might reduce the chances of oil dilution.
15-30 seconds is fine, especially in normal temperatures.
Warming up vehicles is a thing in freezing climates during winter.
I've never done it in winter, but I will say it is a gigantic pain in the ass to scrape ice off the windshields and windows, so I understand why people do it.
I certainly don't buy into the notion that letting a car idle and warm up for 10 minutes is all that detrimental. If idling is that bad for a car then we are designing cars wrong. Yes, i of course agree a car warms up faster under load. That's an irrefutable fact. But letting it run in the driveway for 10 minutes isn't shortening it's life either.
I certainly don't buy into the notion that letting a car idle and warm up for 10 minutes is all that detrimental. If idling is that bad for a car then we are designing cars wrong. Yes, i of course agree a car warms up faster under load. That's an irrefutable fact. But letting it run in the driveway for 10 minutes isn't shortening it's life either.
I've always warmed carburetor engines up for extended periods of time. But Honda claims that it's oil dilution problems are worse in cold weather. I gotta think this is why.
I think that's because of the same reason some Saabs had sludge issues: not letting the car get up to proper operating temperature.
I certainly don't buy into the notion that letting a car idle and warm up for 10 minutes is all that detrimental. If idling is that bad for a car then we are designing cars wrong. Yes, i of course agree a car warms up faster under load. That's an irrefutable fact. But letting it run in the driveway for 10 minutes isn't shortening it's life either.