I take your point, Jolly, and thanks. The caution I expressed was repeated several times in a Rotax maintenance course that I took a few years ago. Perhaps the instructor feared inadvertent prop turning while the oil circuit was open at two places, which would introduce air.
RV-14 - Building Empennage
RV-12 - Flying 2016; Sold 2018
RV-10 - Project Sold
SeaRey - Flying 2012; Sold 2017
2018 Contribution made