Given that I saw GM recommending d1G2 for some Euro gas DIT applications some months ago, maybe they are just going to bag having LSPI tests for d2?? The whole point seemed to be to recommend one standard for gas and diesel cars and they have already gotten away from that.
Given that the enigmatic article referencing the Opel guy stated that the LSPI tests would not cover the "old" grades (assuming they meant thicker than XW20), anyway, d2 means nothing to me as far as my present vehicle is concerned.
I never ended up running any d2 oils unless you want to count the Mobil 1 ESP 5w30 that now seems to be d2 (this was before d1G2), but I hope nobody worried about LSPI ran them because of what I was posting here! The VOAs I have seen for that ESP as well as the Pennzoil Euro L 5W30 do tend to suggest that they should be LSPI-resistant, though.
Given that the enigmatic article referencing the Opel guy stated that the LSPI tests would not cover the "old" grades (assuming they meant thicker than XW20), anyway, d2 means nothing to me as far as my present vehicle is concerned.
I never ended up running any d2 oils unless you want to count the Mobil 1 ESP 5w30 that now seems to be d2 (this was before d1G2), but I hope nobody worried about LSPI ran them because of what I was posting here! The VOAs I have seen for that ESP as well as the Pennzoil Euro L 5W30 do tend to suggest that they should be LSPI-resistant, though.