Thanks for the info Peter.
When on course the instructor dealt with total loss of oil more than loss of both pumps. At least that was the impression I was left with. As I said I don't have my course notes to hand at the moment. Hence the question.
Of course in either case loss of pressure would lead to activation of the ELUBE system as per ECL.
As for my edited thought: My point (dull that it may be LOL) was that in the event of a total loss of oil there would be no accurate oil temp information but in the event of loss of both pumps there may be.
Just an aside nothing more. The S-92 accident was what brought it to mind.