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Started By
Message
re: Letting the car warm up before taking off, like 20 secs
Posted on 3/1/19 at 10:50 am to KLSU
Posted on 3/1/19 at 10:50 am to KLSU
quote:
If I don’t let my 2011 F-150 with 111k miles warm a little before taking off I get really hard shifts in low gear for the first few shifts. I do the same and let it warm for 30-45 Seconds before putting in gear
yep, fluids need to warm up and circulate, pressures need to stabilize, all internal combustion engines are like that, jet engines have warm up and cool down times that must be adhered to prior to applying more than idle thrust and before shutdown, a vehicle is usually a large part of an individual's expenditures, don't know why you wouldn't want to take care of it and make it last
0
Posted on 3/1/19 at 11:21 am to upgrayedd
quote:
There's no reason to let a modern vehicle warm up
Every modern car still has an oil pump
Posted on 3/1/19 at 11:40 am to t00f
i can’t help but think of that Goodfellas scene where Morrie gets whacked.
“What the frick are you waiting on”
“I’m letting the car warm up” when he is about to take the car and dump it at the crusher anyways
“What the frick are you waiting on”
“I’m letting the car warm up” when he is about to take the car and dump it at the crusher anyways
Posted on 3/1/19 at 11:43 am to t00f
quote:
Wife
pics?
Posted on 3/1/19 at 11:46 am to t00f
Still warm up my vehicles for at least 5 minutes every am. Not sure if it's beneficial or not, but I'm a creature of habit.
As mentioned earlier in the thread, I still turn the A/C off before killing it too. Irks the hell outta my wife.
As mentioned earlier in the thread, I still turn the A/C off before killing it too. Irks the hell outta my wife.
This post was edited on 3/1/19 at 12:03 pm
Posted on 3/1/19 at 11:47 am to Winston Cup
quote:
Wife
pics?
Posted on 3/1/19 at 11:48 am to t00f
I like to let the idle come down before I take off. It takes less than a minute. I make sure I do this in cold weather. Force of habit from my younger days I guess.
Posted on 3/1/19 at 11:51 am to Winston Cup
quote:
idling time leads to raw gasoline seeping into the oil, breaking down the oil's lubrication properties and increasing the wear
Lots of seepage happening at soccer practice.
Posted on 3/1/19 at 12:04 pm to 777Tiger
Once they touch either of the pedals, it shuts off
Posted on 3/1/19 at 12:07 pm to Hammertime
The real question here is how's the fuel consumption at 120 mph? Because, as we've learned in the past if you go faster you get more mpg.
Posted on 3/1/19 at 12:51 pm to t00f
Only worth doing if you have a carb, so if your car is older than 30, go ahead.
Posted on 3/1/19 at 12:54 pm to t00f
Posted on 3/1/19 at 12:57 pm to KLSU
quote:
If I don’t let my 2011 F-150 with 111k miles warm a little before taking off I get really hard shifts in low gear for the first few shifts.
These modern trans operate better when the fluid is up to temp.
Your transmission is more likely to go out first rather than the added rotations warming up your car takes from engine life
Posted on 3/1/19 at 12:58 pm to NYCAuburn
I let mine warm up for 5-10min if it's cold outside. Just to get the heat going
Posted on 3/1/19 at 12:59 pm to t00f
Catalytic converter or a diesel?
This post was edited on 3/1/19 at 1:00 pm
Posted on 3/1/19 at 1:19 pm to t00f
The only time you need to let your engine warm up is in temps at or below freezing. And what you’re really doing is warming up the oil more so than the engine itself. The reason for this is that warm oil flows more freely.
Having said that, what you’re doing now is not a bad thing. I don’t know that waiting 20 seconds is necessary though. Those few seconds does allow oil to circulate a bit. But it doesn’t take that long.
Having said that, what you’re doing now is not a bad thing. I don’t know that waiting 20 seconds is necessary though. Those few seconds does allow oil to circulate a bit. But it doesn’t take that long.
This post was edited on 3/1/19 at 1:26 pm
Posted on 3/1/19 at 1:59 pm to Napoleon
quote:
Only worth doing if you have a carb, so if your car is older than 30, go ahead.
This, just old ideas carried over to modern times.
Even modern low viscosity oils oil remains on the wear surfaces for days. Oil in the gallies will seep down but oil in the oiling passages will remain. The time it takes from releasing the ignition to getting the car in gear is more than enough to have proper lubrication of all the engines wear surfaces. Idling simply adds to the wear of a modern engine but obviously, it is very small but intentionally idling is counterproductive. Fuel washdown past the rings is also an issue so idling for more than a minute or two on initial startup can cause excessive wear at the time and reduce the lubrication ability of the oil, this doesn't just impact the engine at idle but at speed as well.
All you are doing in a modern car by idling on startup is wasting time, fuel and adding wear to an engine. This is just carried over from yesteryear, just like turbo cooldown. Unless you have been running hot laps at the track modern turbos are designed to keep oil moving after engine shutoff to avoid coking the bearings.
Posted on 3/1/19 at 2:07 pm to theantiquetiger
quote:Nope, not necessary. The only thing that would help is the rings and there's plenty left on the walls to lube a few seconds. The oil moves quickly after cranking. Guess how you can make it move faster?
t’s not to warm up, it’s to get the oil up and about
Posted on 3/1/19 at 2:10 pm to Demshoes
quote:you don't understand engines, do you, and neither do those upvoters. This might matter if you leave a vehicle sit for several days, but day to day, there is absolutely no reason to warm up a vehicle.
To me, starting the car and driving immediately is like going in dry without telling your partner. Gotta let the earl flow for a little bit.
Posted on 3/1/19 at 2:39 pm to Clames
they also now normally have one way valves that don't let the oil drain back into the pan when the engine is off so there is constantly oil sitting in the engine.
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