Normal vs expensive diesel

[cobito]

You already know, normal or improved diesel.

I've been reading about the topic and the truth is that I've rarely come across such long paragraphs that say absolutely nothing. And it's not that I've only visited one site, but that in no site or forum do they say ANYTHING useful about the question. My conclusion is that nobody knows anything about this topic except for the typical "technicalities" of cetanes, additives and such. But nothing about the results of using one or the other. In the end, some recommend the expensive one, others say it doesn't matter and others say it's better to use the cheap one, although it's true that in most opinions they recommend the expensive one (without giving a single objective fact, though).

Talking to different people, some tell me it's better to use the expensive one because it lasts longer and takes care of the injectors, and others say that in reality the improved one is worse for the injectors. My car is old: a HDI from 2003. Since I bought it a year and a half ago, I've been using the cheap one and it consumed 4.8-5 l/100km (noting liters at each refueling and km of the odometer). For several months now, I've been using the expensive one and the autonomy is exactly the same. Regarding power, I haven't noticed anything appreciable.

I use it quite little (about 40 km a day) and the truth is that putting one or the other doesn't mean an excessive economic effort for me (about 3€ extra per month). Knowing that the autonomy is the same, I have doubts about the care of the injectors. It's not that the car has a great value, but if by spending that extra amount of money I'm going to make the breakdowns appear a few kilometers later, I prefer it even if the breakdowns end up being cheaper than what I've spent extra on diesel during that time.

Those of you who have a diesel, what is your experience?

Thanks.

[krampak]

I've always wondered... and what I do is for every 5 deposits of normal, I put 1 of the improved xD I've never bothered to look for objective data, I don't always drive the same way and the truth is that it gives me quite a headache and in the end unless they tell me that my car will die 5 years earlier for using the bad one, I'm not going to stop using it.

Another parallel debate would be which brand of fuel to use... Premira vs BP/Repsol, is it worth going for the more expensive ones?

[Yorus]

Complicated topic, because surely what you have found is more or less what the rest of us have found.

I have two cars, one petrol from 95 and one diesel from 2006, which is the one I use the most. In both cases I usually refuel at Repsol, because I have the Repsol Visa, Repsol Wallet and other things for discounts, and on top of that I have two gas stations that are convenient for me, one very close to work. In addition, with diesel I do like Krampak, I usually use normal diesel and occasionally "premium" diesel, because I also have a greater discount on this one and the price difference ends up being even less.

I don't know, there are many stories about the quality of the fuel at Alcampo, Carrefour, etc... but for me the simple fact of not having to wait in long queues compensates for going to Repsol, I hate waiting.

[rul3s]

So to start, I would differentiate 3 "qualities" of product, the low-cost gas station one, the normal brand gas station one, and the premium brand gas station one.
Between the first two I think they are exactly the same, but with the third one I do think there must be differences.
It is also said that in diesels it is noticed more since as fuel it is more "dirty" than gasoline.
Lastly, I have always had gasoline cars, and currently I am driving a 1.8Turbo with a chip tuning of 180cv @ 230cv and I keep putting 95 in a low cost gas station that is next to my house, the car has 70 thousand km, of which 50 thousand are with the chip tuning, and it is running like the first day...
Of this there are many "I have heard, I think, etc..." but empirical tests, few, very few...

[Fassou]

In my humble opinion, the most important thing is to refuel at gas stations with tanks in good condition.

Newly built gas stations, or simply those that have a lot of traffic and are in high places, you forget about possible problems of "too much water" in the fuel.

Avoid refueling when the tank is being unloaded (in theory, they take measures so that it does not affect, but if there is no need), and gas stations that are too cheap with a reputation for playing QuimiCefa (more likely in very small franchises and very far from distribution centers).

Putting in expensive Diesel every now and then won't hurt it, and it may even be good for it because of all those extra additives it carries, but I don't think it's economically worth doing it regularly.

Salu2!

[cobito]

Well, in the end I suppose it is a matter of faith. I also read that there are people who believe that their car has more power, but that could well be a placebo effect. I will do that of putting expensive diesel every x deposits.

[Xevipiu]

I also have an old diesel, from November 2002, 12 years ago I reprogrammed the ECU, apart from gaining horses, it reduced consumption
I go on vacation to Germany to Köln every year, to go and return I need a little more than two tanks, with an average consumption of 5.2 between 120/130Km/h through France and 150km/m through Germany, in the three tanks I use the additives to clean the injectors, I use a bottle and a half per tank, more than recommended. but the truth is that it is noticeable. (with the ERG valve mechanically and by software disabled)

A diesel if you do long trips, it compensates. It is clear, it is more expensive maintenance, and its taxes for the declared fiscal horses.

Speaking of the topic, this week I bought my 2nd Copa phase 1 from 86, this one doesn't consume anything