Is the 1.5 3cyl in the Super3 a wet belt engine? If so you probably want the Ford spec oil... which should be similar to Fiestas etc in the USA.
I think that although the earlier ecoboost/ Dragon engines were wet timing belts, the design was changed to chain in about 2018, after Ford saw the error of their ways. So I am assuming that all Morgan S3s are chain.
BUT, I also understand that the oil pump is wet belt on all of these engines so regular oil changes with the right stuff are essential, otherwise the internal gauze filters can become clogged with bits of belt!
(Happy to be corrected if proved to be wrong on this.)