Be careful with him, he is counterproductive.
When it comes to saving at the wheel, one of the solutions that is first heard is not to force the engine and drive in long, relaxed gears, so that consumption is lower. It is partly true, but what many people do not know is that abusing driving at low revs can end up being a source of engine failure.
First, to Caesar what is Caesar’s: driving at lower revs makes the engine not force itself so much and consumption is more contained. However, we must also know at what rev rate the block of our car feels most comfortable in order to adapt our driving to it.
Logically, this depends on whether we are behind the wheel of a gasoline or a diesel. Establishing a general framework, a gasoline engine has its comfort zone between 2,000 and 3,500 rpm, while that of a diesel engine is a little below, between 1,500 and 3,000 rpm.
It is in these respective forks where the blocks deliver their maximum torque, which gives them the necessary push to respond quickly, reacting when stepping on the accelerator, which also helps to contain consumption.
If, instead, you seek to drive with the lowest revs, “the shot backfires”, as they say: if you need power and demand it from a very low rpm, the demand on the engine will be higher, its response will be much slower and during the process the fuel consumption will be much higher.
This is already a problem in itself, but there is more, since driving at low revs can lead to breakdowns of various importance.
On the one hand, at low revs, the engines vibrate much more than usual, which, on the one hand, is a nuisance for those on board and, on the other, can cause certain parts to break or wear out prematurely. .
On the other hand, there are certain systems that suffer from this type of driving: anti-pollution systems, anti-particle filters, etc. By not working at an optimal (higher) temperature, they are not able to burn the residues and it is possible that, consequently, they end up being blocked.