Speaking of Castrol, BP sold 65% of the shares to American investment firm Stonepeak. https://www.bbc.com/news/articles/c93wekx37g4o
I have minimal mechanical knowledge, so I can't tell if it's stronger or weaker than T3 or T4. But it certainly looks awseomely fast!
Bikes after stage 6: 1. AUS Daniel Sanders (KTM), 24:41' 2. USA Ricky Brabec (Honda), + 0'45 (!!!) 3. ARG Luciano Benavides (KTM), + 10' 4. ESP Tosha Schareina (Honda), + 12' 5. CHI Ignacio...
Halfway through Dakar. Top 10 drivers are within 30 minutes gap. 1 - Nasser Al Attiyah (Dacia) 2 - Henk Lategan (Toyota GR) +6m 10s 3 - Nani Roma (Ford M-Sport) +9m 13s 4 - Carlos Sainz (Ford...

I haven't found information about which races and cars would Trelles use at the EHRC
ERC Historic