What is the real difference to perform and engine oil and filters change in an actual (EURO V) heavy truck if comparared
with an EURO III ?
Are the new motor oils more expensive?
All current trucks run sintetic trans oil?
Edzio
Al trucks should have synthetic lubes in the gearbox and differentials, it should last 500,000miles before it needs replacing.
In an engine it doesn’t matter whether you use synthetic or mineral oil, you’ll need to change the oil at the same intervals, the oil itself does not break down, it gets overwhelmed by the contaminents from the engine, in a healthy engine these will be soot and wear metals, in an unhealthy engine there may be excessive soot and wear metals and/or contamination from coolant or fuel.
Filters have different micron ratings, on a full flow oil filter you want to have the one with the lowest micron rating, this will give better protection as it filters out down to, on average, 1 micron (smaller than the naked eye can see) for fuel filters the opposite applies, you want the correct filter for your engine, but use the one with the lowest micron rating and the fuel flows better, very important in a high pressure common rail fuel system 
Synthetic lubes do offer better cold start protection and their lighter film strength will improve economy by decreasing friction caused by oil churn, but if you’re chucking it down the drain every 15,000miles you may as well use regular mineral oil as it’s cheaper
newmercman:
Al trucks should have synthetic lubes in the gearbox and differentials, it should last 500,000miles before it needs replacing.In an engine it doesn’t matter whether you use synthetic or mineral oil, you’ll need to change the oil at the same intervals, the oil itself does not break down, it gets overwhelmed by the contaminents from the engine, in a healthy engine these will be soot and wear metals, in an unhealthy engine there may be excessive soot and wear metals and/or contamination from coolant or fuel.
Filters have different micron ratings, on a full flow oil filter you want to have the one with the lowest micron rating, this will give better protection as it filters out down to, on average, 1 micron (smaller than the naked eye can see) for fuel filters the opposite applies, you want the correct filter for your engine, but use the one with the lowest micron rating and the fuel flows better, very important in a high pressure common rail fuel system
Synthetic lubes do offer better cold start protection and their lighter film strength will improve economy by decreasing friction caused by oil churn, but if you’re chucking it down the drain every 15,000miles you may as well use regular mineral oil as it’s cheaper
It matters in the MX engine if you don’t use synthetic,warranty will be nil and void if any damage is done due to mineral oil
Really 
Mineral oil and synthetic oil are exactly the same really, just a different molecular structure, if you look at mineral oil under a microscope it looks like cooked spaghetti, all tangled up, do the same for synthetic and it looks like uncooked spaghetti in a pack. It is a better oil, no dounbt about that, but mineral oil does exactly the same job, so any engine will run just fine on either oil.
BTW, my firm has got six motors with the MX engine and they don’t have to run synthetic oil 
In any case the manufacturer would have to prove that the mineral oil was the cause of any problem to be able to dispute any warranty claim 
Taking it to an extreme, you could fit six turbochargers, totally remap the ECU and if you blew a hole in the radiator the manufacturer would have to prove that the modifications caused the failure, if they couldn’t, they’d have to put it right
So… No offence, but I’m sure you can work out my thoughts on the warranty revocation, but just in case you’re struggling, the words, of, ■■■■■■■■ and load would appear in my answer 
if your mx engine is out of warranty you can run it on whatever you want ,as your paying the bills and it’s your truck…If in warranty with a failure ,the dealer sends a sample of the oil away to a lab ,they then send back the results and if not synthetic oil ,you will not get warranty ,talking about spaghetti won’t help ,All the PROOF DAF need is in the lab results.You have not run the engine with the approved /correct oil which they designed the engine to run on etc…Millions is spent developing new oils to cope with the stress and combustion processes ,tighter tolerances of the modern engine etc…And sticking in fresh syn oil after a failure would be picked up ,just like the person who seizes a engine and thinks filling it with oil after the fact will get them away with it
I hear you on the putting fresh oil in thing, that won’t fool anyone, I also agree that the oil refiners have indeed made serious headway in improving their oiils, the actual oil content of a gallon of oil is not as big as you would think, additives make up a large percentage of what you pour out of the can. These additives are essential in protecting your engine, but all oils contain the same additive packages, in almost the same concentrations, give or take a few percent here and there.
The only way that the warranty could be null and void through use of the wrong oil would be if the MX engine could only run on a specific oil as it contained an additive unique to the MX engine, other than that there is no way that anything could be blamed on the oil used in the engine.
They may recommend a specific oil, IVECO do this as they have their ‘own’ oil brand, but there is no requirement to use it.
Where did you get this information from? Does it state it anywhere in the warranty T&Cs, if so I would be interested to see the document