Test (questa volta di laboratorio) di alcuni olii motore...

[Geckots]

Test interessante...

Engine Oil Testing
Chemical and physical analysis on commercial lubricants.

Unfortunately, I?m not allowed to show the exact readings of what we found, but I can five a rating on 1-10 on the factors that were tested on the different brands. If anyone wants further info on the results the just send a message. (1) represents a very poor result with (10) being near ultimate.

Oxidation tests
The combined effects of ambient oxygen and temperature affect lubricant aging; this phenomenon is known as oxidation. In laboratory oxidation tests, temperatures are selected in accordance with those encountered during equipment operation.

Corrosion tests
One of a lubricant's main functions is protection against corrosion. Accordingly, the reactions between the lubricant and various metal surfaces need to be determined and, where appropriate, modified.

Chemical compatibility tests
These tests are used to determine the behavior of various materials when in contact with oil. For example, specific tests are conducted to ensure the compatibility of a lubricant with seals.

Storage stability tests
Some lubricant combinations are formed by the association of products that are not fully miscible in oil. In this case, final stability representative of changes during storage needs to be checked.

Dispersion tests
The purpose of these tests is to determine the ability of an oil to maintain in suspension solids likely to pollute it during operation. For example, combustion engines produce carbon residues (soot), some of which are found in the oil. The latter must be able to maintain the soot in suspension and prevent deposits that could result in fouling or even clogging.

Shear tests
These tests determine how well lubricants withstand mechanical loads that can cause the molecules of some components to break up.

Pressure tests
There is no device available that can directly measure the ability of an oil film to withstand pressure. In the laboratory, the various properties (unctuosity, film strength, high pressure, extreme pressure) can only be assessed by their effects, using test benches that vary, one after the other, the factors that could influence them. The same types of test are carried out for greases as for oils, using special devices: four-ball machine, Timken, etc.

Bench tests

Laboratory tests are supplemented by bench tests on machines very similar to real ones and which operate under controlled conditions.

Engine tests
Engine tests are designed to determine the behaviour of oils on either gasoline or diesel engines. Each test is performed in such a way as to highlight one or more lubricant properties. No engine test enables all properties to be tested at the same time.

Bench tests are carried out either on standard automotive multi-cylinder engines or on single-cylinder engines.

Gear tests
These tests check, on real gears, the internal cohesion and pressure withstanding properties of lubricants. Various methods are used depending on the type of gear and test conditions.

Power

To test and determine the efficiency of the oil in being able to provide both, peak and smoothness of power delivery. Ability proven on engine dyno.

Reduction in friction

To show the absolute lubricating properties of the oil and the correlation in power production.

Anti-wear ability

Laboratory testing to highlight the mass and size of metal particles with in the sample of oil after 100 hours of testing.

Testing in operation

Lubricants cannot be developed without laboratory and bench tests. But these tests are specialized and, however carefully done, cannot be considered to be fully comprehensive: only operating tests can provide the final word on whether a lubricant is suitable for a given application.

Operating tests have two advantages :

they allow manufacturers to keep up with changes in the lubrication needs of various types of machinery and in the strength of the lubricants developed for them ;
they provide valuable information for adjusting bench testing methods used in the preliminary stages of development.
Operating tests are usually long and expensive, since they have to be carried out statistically on a variety of machines of the same category. Sometimes individual tests have to be repeated in order to allow for mechanical component failure, which often occurs.

The test findings are based on :

observations made throughout the duration of tests by specialized engineers,
routine analyses of lubricants sampled during operation,
examination of mechanical components once the test has been completed.
I strongly advise that you read the results that were found very, very, very carefully. Look at the properties that are important for the application that you are using it for. For example, just because a certain oil didn?t rank well overall, does not mean that it is not the best for a certain use. In the competition section, castrol ranked the poorest overall, but how it stores and how long it lasts are not issues for a racing driver, and infact would rate as being one of the best as a purpose race oil. So take notice of the aspects that reflect the use of a certain products. It would be stupid to look at a product as number 1 or 2 and say ?yep that?s what I?ll get next??..cost is also a big factor and value for money might be a deciding factor.


Group Number (1): Fully synthetic, light grade 4-stroke engine oils


Agip evolution 0W40
Agip evolution 5W40
Castrol formula r 0W40
Castrol formula r 5W30
Elf Excellium 0W40
Elf Excellium 5W40
Mobil 1 0W40
Mobil 1 5W50
Motul e-tech 8100 0W40
Motul e-tech 8100 0W30
Redline 5W30

Oxidation
8
6
8
5
9
8
9
9
8
7
6

Corrosion
8
8
9
8
10
9
10
7
7
7
8

Chemical Compatibility
8
9
9
9
9
9
9
8
8
9
9

Storage
9
9
8
6
7
7
8
10
8
8
8

Dispersion
9
8
9
7
10
9
10
7
10
9
9

Shear Tests
8
7
7
7
9
9
8
6
7
8
7

Pressure resistance
7
8
7
6
8
8
7
9
9

8

Power conversion
8
9
8
9
9
9
9
7
8
9
8

Reduction in friction co-efficient
8
8
8
9
9
9
9
8
8
8
9

Anti-wear
8
8
8
7
10
10
10
7
8
7
8




Rankings:



1. Elf Excellium 0W40

2. Mobil 1 0W40

3. Elf Excellium LDX 5W40

4. Agip evolution 0W40 / Castrol Formula r 0W40

6. Motul E-tech 8100 0W40

7. Agip evolution 5W40 / Redline 5W30

9. Mobil 1 5W50

10. Castrol Formula r 0W30

11. Motul E-tech 8100 0W30








Group Number (2): Fully synthetic, medium grade 4-stroke engine oils


Agip sint 2000 10W40
Castrol formula r 10W60
Elf Excellium 10W50
Mobil 1 5W50
Motul 6100 10W40
Penzoil GT 15W40
Redline 10W40
Shell Helix Ultra 5W40




Oxidation
8
8
9
9
9
6
7
8

Corrosion
9
8
9
7
7
6
8
8

Chemical Compatibility
8
7
8
8
8
9
8
9

Storage
7
6
7
10
6
8
7
9

Dispersion
9
8
9
7
9
7
8
7

Shear Tests
8
7
8
6
8
5
7
8

Pressure resistance
8
10
10
9
7
8
8
8

Power conversion
9
8
9
7
9
6
9
8

Reduction in friction co-efficient
9
8
9
8
8
7
8
8

Anti-wear
10
7
9
7
9
6
9
8




Rankings:



1. Elf Excellium 10W40

2. Agip Sint 2000 10W40

3. Shell Helix Ultra 5W40

4. Motul 6100 10W40

5. Redline 10W40

6. Mobil 1 5W50

7. Castrol Formula R 10W60

8. Penzoil GT 15W40




Group Number (3): Fully synthetic, full competition purpose 4-stroke engine oils


Agip GPX N1 10W40
Castrol formula SLX 0W30
Elf HTX833 10W50
Mobil 1 0W40
Motul 300V 10W40
Redline Raceoil 5W40
Royal Purple 5W30

Oxidation
7
6
8
9
7
7
7

Corrosion
8
8
9
10
8
8
8

Chemical Compatibility
9
6
7
9
7
7
8

Storage
6
5
7
8
7
6
7

Dispersion
10
10
10
10
10
10
10

Shear Tests
10
9
10
8
10
9
9

Pressure resistance
9
7
10
7
8
8
7

Power conversion
10
10
10
9
10
9
9

Reduction in friction co-efficient
10
10
10
9
10
9
10

Anti-wear
10
10
10
10
10
10
9




Rankings:



1. Elf HTX833 10W50

2. Mobil 1 0W40

3. Agip SZ N1 10W40

4. Motul 300V 10W40

5. Royal Purple 5W30

6. Redline Raceoil 5W40

7. Castrol Formula SLX





Group Number (4): Fully synthetic, gearbox and differential oils


Agip Rotara LSX 75W90
Castrol Syntrax 75W90
Elf HTX729 75W90
Mobil SHC 75W90
Mobil XHP 75W90
Motul Gear300 75W90
Redline NS 75W90
Shell SGO 75W90

Oxidation
8
9
9
8
6
9
9
7

Corrosion
9
9
9
9
10
9
8
8

Chemical Compatibility
8
9
9
8
10
9
10
8

Storage
10
10
10
10
10
10
10
10

Dispersion
10
9
10
9
9
10
10
9

Shear Tests
10
9
10
10
7
10
8
8

Pressure resistance
10
9
9
9
6
10
8
8

Power conversion


8
9
10
8
8
10
9
7

Reduction in friction co-efficient
9
10
10
9
9
10
9
8

Anti-wear
9
10
9
9
7
10
9
9




Rankings:



1. Motul Gear300 75W90

2. Elf HTX729

3. Castrol Syntrax 75W90

4. Agip Rotara LSX 75W90

5. Mobil SHC 75W90 / Redline NS 75W90

6 Redline NS 75W90

7. Mobil XHP 75W90 / Shell SGO 75W90




Scusate per l'impaginazione... ma con un p? di calma si riesce a leggere...

[Sceriff]

Viste le nostre gradazioni direi che stiamo utilizzando gli olii migliori!

[cadettoktm]

COMPLIMENTI OTTIMO LAVORO !!

[Knight]

ottimo Paolo

[kraaker]

:grin: Molto interessante, appena ho un attimo leggo tutto!

[CeliLuca]

Sto impazzendo per leggerlo... :lol:

Cosa ne deduciamo? La parola agli esperti!!
Il nostro 10w-40 dovrebbe essere buono, io venerd? faccio il cambio e rimetto quello toyota (mi hanno detto che un ragazzo ha provato un 5w ma si ? trovato male)

Booo... pronunciatevi luminari dell'olio  

[Vime]

Il nostro 10w-40 dovrebbe essere buono, io venerd? faccio il cambio e rimetto quello toyota (mi hanno detto che un ragazzo ha provato un 5w ma si ? trovato male)

Booo... pronunciatevi luminari dell'olio  

 

[Knight]

come valori il migliore del gruppo 3 (quello che interessa a noi ) full sintetic dovrebbe essere dai punteggi rilevati il MOBIL 1 0W40

[CeliLuca]

Il nostro 10w-40 dovrebbe essere buono, io venerd? faccio il cambio e rimetto quello toyota (mi hanno detto che un ragazzo ha provato un 5w ma si ? trovato male)

Booo... pronunciatevi luminari dell'olio  

 

 :oops: qualcosina ho letto, ok vado a studiare meglio...

[Kelvin]

allora che famo?

regaliamo il motul al vicino di casa per cuocere le patatine e passiamo tutti al mobil?

con quello che costa non sara' cercto indigesto  :grin:

[rixxio]

ma il mobil 1 0-40?? non ? meglio un 10?  

[Kelvin]

ma il mobil 1 0-40?? non ? meglio un 10?  

e' 10/40 ha semplicemente scritto male.


Comunque penso che Paolo in fatto di Olio ne dovrebbe sapere + di tutti, anche + di WOLFE

visto che l'ultima volta che ci ha giocato e' rimasto senza macchina per + di un anno  :lol:






Oggi mi va di mettere un olio come dire... DIVERSO!

LOOOOOOOOOOOL

[CeliLuca]

Ma il 10w 40 che la toyota cerca di metterci ai tagliandi ? un buon olio? A parte il fatto che sono soldi regalati, ma almeno ? decente/adeguato alla celi (ts o 143 che sia)??

[folletto101]

ma il mobil 1 0-40?? non ? meglio un 10?  

e' 10/40 ha semplicemente scritto male.


Comunque penso che Paolo in fatto di Olio ne dovrebbe sapere + di tutti, anche + di WOLFE

visto che l'ultima volta che ci ha giocato e' rimasto senza macchina per + di un anno  :lol:






Oggi mi va di mettere un olio come dire... DIVERSO!

LOOOOOOOOOOOL

Ha scritto benissimo.... MOBIL 1 ed ? uno 0W40!  

[Kelvin]

Ha scritto benissimo.... MOBIL 1 ed ? uno 0W40!  

ah ok, beh in italia non penso ci sara' mai bisogno di un 0W40 alemno non fino alla prossima glaciazione