To be fair all approved turbine oils contain TCP not just Mobil Jet 2, and it is one of the isomers of TCP that actually causes the problem not TCP itself.
Just a small point, I agree that Tornados run on OX 26 but Mobil Jet 2 is approved to OX-27
OX 27 is the joint services designation for turbine oils and several oils are approved to this specification (Def Stan 91-101) including Mobil Jet 2, BPTO 2380 and ASTO 500.
OX 26 is the joint services designation for oils approved to specification (Def Stan 91-100) including BPTO 25 and ASTO 555.
Higher load carrying oils such as OX-26 are required for the RB199's