"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

[Skif_tlt 11 510]

Abadi55z вы не ошиблись? Март 2016 - сентябрь 2020?

Изменено 3 ноября 2020 пользователем Skif_tlt

[Abadi55z 37]

2 минуты назад, Skif_tlt сказал:

Abadi55z вы не ошиблись? Март 2016 - сентябрь 2020?

16th of March till 20th of September 

 

Цитата

Oil service life:

6 months and 4 days 

 

[Евген48 29 236]

Abadi55z почему измерили отработку методом ASTM 2896?

Изменено 3 ноября 2020 пользователем Евген 48

[Abadi55z 37]

Только что, Евген 48 сказал:

Abadi55z почему измерили отработку методом ASTM 2896?

I don't know why, most laboratories here test the waste oil by this method. 

[Евген48 29 236]

2 минуты назад, Abadi55z сказал:

I don't know why, most laboratories here test the waste oil by this method. 

Если есть возможность, спросите, почему не ASTM 4739.

[Abadi55z 37]

7 минут назад, Евген 48 сказал:

Если есть возможность, спросите, почему не ASTM 4739.

Yes I had a little chat with the guy who is responsible for the analysis, and from what I remember he said this is the same method and there are no differences between ASTM 4739 and ASTM 2896. 

and I was like 

[Евген48 29 236]

Abadi55z тогда передайте ему огромный "привет"

[Dimmy 12 240]

3 часа назад, Abadi55z сказал:

Yes I had a little chat with the guy who is responsible for the analysis, and from what I remember he said this is the same method and there are no differences between ASTM 4739 and ASTM 2896. 

If he said so he is an irresponsible person

[Abadi55z 37]

10 минут назад, Dimmy сказал:

If he said so he is an irresponsible person

Probably right, from your own perspective can we say ASTM D4739 is always less than the ASTM D2896 by 1 to 1.5 units. 

Is that right for the worked out oil?

In this situation can we say the correct TBN should  be around 6.96 - 6.46?

[Евген48 29 236]

Abadi55z возможно, но всё равно надо измерять, а не гадать на пальцах, в любом случае масло рабочее.

perhaps, but you still need to measure, and not guess on your fingers, in any case, the oil is working.

[Dimmy 12 240]

31 минуту назад, Abadi55z сказал:

from your own perspective can we say ASTM D4739 is always less than the ASTM D2896 by 1 to 1.5 units. 

Is that right for the worked out oil?

It works only with virgin oils. If we use the D4739 and D2896 methods for the used oil the difference may be bigger.  In your case 8 by D2896 may correspond to 7, 6 and even 5 by D4739. The oxidation of the motor oil makes the relation between TBN by different methods quite unpredictable.

Изменено 3 ноября 2020 пользователем Dimmy

[Dimmy 12 240]

33 минуты назад, Abadi55z сказал:

In this situation can we say the correct TBN should  be around 6.96 - 6.46?

Possible but not for sure.

[Abadi55z 37]

Евген 48 Dimmy Ok that's make sense.  

[Dimmy 12 240]

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?