Warm up or not? - Toyota Corolla, 1.6L, 2004
I had to listen to a lot of discussions on this topic. In general, I am a supporter of warming up the engine before a trip, especially if it is below 0. But since I live in Germany, this is not allowed here. Therefore, I act as follows: I turn on the 1st speed and move like this at low revs for 2-3 minutes in the yard, until I find myself on the road.
Who thinks about this?
An eternal theme. I usually don't warm up for a long time, I cleaned the car of snow, mirrors and slowly drove off, rpm 2-3 thousand, the engine warmed up, then you can.
And the Germans are local - they sit down, buckle up, start and go straight ahead, absolutely not warming up. So they are taught even in driving courses. Environmental protection is more important!
More about the practice of the Germans (and not only) to get under way immediately after the engine plant. It still seems to me that German engineers when designing and tuning engines are guided not only by environmental requirements, but also, taking these requirements into account, are trying to tune engines in such a way that the so-called cold running wear is minimized. After all, they are not their own enemies. Why should they recommend the mode of operation of the mechanism, which is the most harmful for this mechanism? So I think, in the end, warm-up is not important. The difference in resource will be minimal.
The Germans generally drive like this in any car. I used to think about them the way you did, until I lived here a bit and understood a lot. They are very far from technique, if they have not specially studied it. Very narrow specialization and that's it. Savvy at a low level. But a very big conceit.
I agree, I think that this also makes an important contribution.
I would also like to know the opinion of German engineers on this issue :)
It seems to me that a lot still depends on the oil. Many oils, including my "Kuttenkeuler 5W-30 MB-Tronic" oil can, read: Optimized for cold start and engine operation. Maybe this is fundamental?
More about the practice of the Germans (and not only) to get under way immediately after the engine plant. It still seems to me that German engineers when designing and tuning engines are guided not only by environmental requirements, but also, taking these requirements into account, are trying to tune engines in such a way that the so-called cold running wear is minimized. After all, they are not their own enemies. Why should they recommend the mode of operation of the mechanism, which is the most harmful for this mechanism? So I think, in the end, warm-up is not important. The difference in resource will be minimal.
On small ones it is harmful, under stress. Those. starting off at low speeds or driving loaded at low speeds, or both at the same time.
From 2 thousand revolutions (depending on the engine, there was 1.6 in the test) there is a comfort zone up to about 3700-4000.
Small or high? It seems to me on the second, at a speed of 30 km / h just right for a quick warm-up ... It is known, after all, that warming up in motion occurs many times faster.
Dnvitas (gone crazy while decrypting the nickname) is doing it right.
Riding at low revs, with a load, and even not warmed up, is the surest way to ditch the engine in the bud.
In the latter, wear was measured at the wheel, and this turned out to be the most lethal mode. From 2 thousand rpm there is a green zone at any load (on a heated one).
It is better to warm up for a minute and a half or two on the spot (until the temperature arrow starts moving), and drive at about 1.5-2 thousand rpm.
Damn it. So it's better to warm up a little bit than at low revs, though without a special load to move?
Well, everything is clear. It is more profitable for the Germans that the engines do not run for a long time. Therefore, the policy is like that. Headstock drips for repairs and new cars are more often bought. The main thing is that the warranty period has passed.
It also depends on the motor. For example, turbocharged ones without fail recommend to warm up to the first division before starting the movement. There are also high-speed and low-speed motors, with different compression ratios. My Corolla has a speed of about 650 x. Probably anyway, after the factory, just a sneaker on the floor, especially in winter, is not very good for any engine.
I agree with Nihilist - the best option.
I let mine work for a minute, another at idle (until the rpm drops to 800) and start moving. And warming up - until the temperature arrow moves, you need to wait a long time. And I don't see any particular need for that.
never warmed in any frost. except for Lada on Carbet - they can not go stupidly while cold. I think it's unnecessary. in severe frost, idle more than 2 thousand, it is easier for me to go under a load of less than 2 thousand, and it will warm up faster. even on my engine and mechanics, I manage to go like this. but difficult. and one more feature, after starting, even when the temperature shows that everything is warmed up, it is better to drive for another 5-10 minutes in a gentle mode - to warm up the oil. subcooled - more dangerous than overheated.
On new cars, starting from 98, there is a system that regulates idle speed itself. In cold weather, after starting the engine, the engine runs at increased speeds (1500) until warming up and then drops the speed to a normal value. There is little sense in warming up, only increased fuel consumption is useless , for this there is a heating boiler that will warm up the car even before starting the motor. I drove Tsafir and if only I waited until the temperature arrow moves, then during this time I managed to walk on foot and on the move it warms up faster.
With oil, too, nothing will happen if it corresponds to the temperature regime in which the car is used. Look at the oil marking table and everything will be clear. For me, for example, 10w40 means from -23 to +40, and we have a maximum that is -8 in winter. Why warm it up if it works at a lower temperature.
Now look at what you drive from the German car industry and with what mileage?
Half of the cars are over 10-15 years old and have mileage of 200 thousand. What flies? Suspension and various small things. Here is the answer to the question whether you need to warm up or not, but this is of course a master's business and everyone chooses himself. I agree with only one thing that it is not worth pressing on an unheated sneaker.