Looks like I should source an Argenta Haynes Manual!
Thanks.
Rob,
The engine number on my 4/4 cross references to a Fiat Argenta, if yours does too (132D1.000) then I suggest a Fiat factory Argenta Owners Handbook as a source document, service settings given are different to those in my Morgan factory handbook (which appear to be for an earlier Fiat engine).