It could be a number of things:-
Coolant- although the factory tend to use red antifreeze
The lubricant (semi fluid grease) used in the steering rack- It can leach past the rack gaiters
The under seal the factory apply liberally over everything, its a yellow/gold colour....if it has been sprayed on the radiator it will melt when its hot and drip....
Hi Simon
I think you may be correct about the underseal as it is the correct colour. Also there was not a lot of it and today on inspection seems to have stopped.
