Thanks for the guidance.
At this age, is still probable the crankshaft issue on the TD6?
Will be better a 2020 Si6?

 

I think it is still probable but I own a td6 and use different oil then recommended (C3 instead of C1 and soon switching to 5w40). I don't think it really happens with heavier oil but it does happen with less hths level oils. just my 2 cents

 

What the best oil for our td6? Any brand?
Last change (by non JLR dealer) was Liqui Moly.

 

I'm currently running Mobil1 ESP 5w-30. It meets JLR's spec.

But I too am going to switch to a 5w-40 C3 spec as recommended by LRTime. Castrol Magnitec or Motul 8100 X-CLEAN Gen2 5W-40

Most important thing #1. change between 5K-8K. #2 if computer tells you to change before 5K mark, do it, oil dilution will kill the rings quickly. ( soot and fuel mixed in the oil)

 

If I recall, that 5w-40 C3 spec oil was for Vera's non-DPF Discovery 3. Our TDV6 is spec'd for ACEA C1 low SAPS (Sulphated Ash, Phosphorus and Sulphur) oil. C1 is discontinued. C2 and C3 are mid-SAPS meaning they contain more additives that will cause ash buildup in the DPF. C4 is the replacement for C1 as far as I can find right now. It is low SAPS as was C1.

 

Oh my, more research is in my future. LOL

 

Following on the oil discussion... Let us know what you all find as I have also been running that Mobil 1 ESP 5W-30.

 

Unfortunately there doesn't seem to be a 5w40 C4 oil. However, the HTHS viscosity is higher in C4 than C1 so perhaps that makes up for it?

 

The SAPS on the motul 5w40 c3 is 0.7 % and the saps on the eco clean which is a c1 oil is 0.5 % which probably isn't a big difference but I'm also not a big oil guy. The HTHS level though is greatly improved and the viscosity which will protect bearings and such I think ill soon be switching from mobil 1 to the motul oil 5w40 C3

 

Wagon still in the dealer. The will clean the DPF, by removing it.