"Saudi" Shell Helix Ultra I 5W-40 on Nissan Patrol y61 TB48de after 7500 km

[Abadi55z 37]

Quote

 

 Engine:  TB48DE, Petrol 4.8 liters 

 Type of oil used:  Shell Helix Ultra I 5W-40

 Type of car: Nissan Patrol

 manufacturing year:  2015

 Transmission type: Automatic Transmission

 Total kilos on the odometer: 175 thousand kilometers

 Distance traveled on oil: It is not known exactly But almost 7,500 km

 The presence of deposits in the engine: There are no deposits

 Operation period: March 16 - September 20, before the Pandemic and during the full and partial Lockdown, temperature range from +20 to +50 ° C 

 Oil service life:

6 months and 4 days  Fuel Type:  65% 91 Octane gasoline (Mid-March, and months: April-July-August to mid-September) 35% 95 Octane (May and June)
  

 

 Driving modes: The maximum speed reached is 130 kilometers per hour95% in the city5% outside the cityFrequent short tripsLong and frequent engine idle periods, up to 25 minutes of waiting inside the carlittle off-roading, not that hard on the engine. Oil Filter Type:  like what the dealership sells, from MAHLE

 Air Filter Condition: new

 Status of the fuel  filter: New 

 Injectors condition: It was disassembled and cleaned with an  external device before changing the previous oil

 Spark plugs state: old

 Oil volume:  Total 6.8 liters according to the catalog of the car
filled with 6.8 liters.

 Oil sample withdrawal method: thought the drain hole  

 The oil used before this oil: could be a Shell Helix Ultra 1 5W-40 

 Engine Flush: Not used

 Additives to oil: Not added. 

 Additives to fuel: Not added.
 

 

Here is the fresh analysis VOA:

 

 

as you noticed the alkaline number were estimated based on ASTM D2896 and Molybdenum 23ppm whereas the VOA Molybdenum was less than 1ppm 

Изменено 3 ноября 2020 пользователем Abadi55z

[Abadi55z 37]

1 минуту назад, Dimmy сказал:

As for Molybdenum. Actually, I think there should be no Mo in this Ultra I 5W-40. But in your UOA there is some, though twice lower than might be expected. Qiute strange. I don't know what to think. If you are absolutely sure that the previous oil was also Ultra I and the UOA is the same oil that your VOA - then it may be explained by the presence of Mo in Ultra I 5W-40. But why the Lab did not see Mo in the VOA and did it in UOA? The Lab is the same, isn't it?

I'm not 100% sure about the previous oil could be the Mo is residue from previous oil changes.

Yes both Analyzes from the same laboratory.

 

Before a year or so I used an oil with a minimum 55ppm of Mo. 

[Dimmy 12 236]

37 минут назад, Abadi55z сказал:

Before a year or so I used an oil with a minimum 55ppm of Mo. 

To get 23 ppm of Mo from the previous oil the latter should have had about 300-500 ppm.

[Abadi55z 37]

31 минуту назад, Dimmy сказал:

To get 23 ppm of Mo from the previous oil the latter should have had about 300-500 ppm.

Oh that's a lot 

Then it could be an indication of piston ring wear out? 

 

According to this table from Machinery Lubrication. 

 

[Dimmy 12 236]

Abadi55z, I think no. It must be in the oil.

[Abadi55z 37]

1 минуту назад, Dimmy сказал:

Abadi55z, I think no. It must be in the oil.

Ok that's convenient.

Thanks for the information.

[Texacoman 2 660]

13 часов назад, Abadi55z сказал:

Then it could be an indication of piston ring wear out? 

Чтобы столько молибдена настрогало с колец или ещё чего, где он находится как легирующая присадка измеряющаяся в единицах или долях процента, надо, чтобы основного металла было гораздо больше. Но его нет.

Этот молибден из масла.

 

Хороший анализ. Масло в норме. Двигатель в норме. Тихо завидую.

[Abadi55z 37]

14 минут назад, Texacoman сказал:

Чтобы столько молибдена настрогало с колец или ещё чего, где он находится как легирующая присадка измеряющаяся в единицах или долях процента, надо, чтобы основного металла было гораздо больше. Но его нет.

Этот молибден из масла.

 

Хороший анализ. Масло в норме. Двигатель в норме. Тихо завидую.

That's a valuable information I appreciate your judgement behalf on the analysis