Welcome to the World of the Derv.
Think the OAT will be OK
I just get the oil recommended for the derv, Multigrade engine oil, viscosity SAE 10W/40 to ACEA A3 and
ACEA B3
Replaced my one on a Mk2, got it off ebay, my one was a o/e replacement by the packaging.
Love my one, do go well, hope you enjoy yours.
