Can I ask why you chose a different grade to that specified by MGR, 5w30, or Ford themselves, 5w20
US Ford dealers were instructed to switch to 5w20 at the next service if 5w30 was being used for the (stated) reasons of economy and improving start-up oil flow to the timing-chain area of the 2V motor which has a long feed (on one side?). You appear to be going in the opposite direction. Notwithstanding that, Zedtee/Steve's question is "what is the correct oil for 260", not what you or I may have chosen to experiment with, so, as SCP440/Steve says, that has to be a 5w20 grade oil anyway.
David