What oil?
The link above in the D2 section is in Pedros " good oil "
The Penrite man tells a different story with a question not dissimilar .
The D2 question asker was about semi and full and the penrite suggestion is that the full is better , my take on what i read .
If i remember correctly when looking . Penrite suggest the same oils for both the TD5 and TD6 X5 ( either semi or full )but not the TD6 L322 ( semi )
Don`t know about the TDV8/6s
