I've used 10-30 semi, 10-40 semi or long drain mineral ( for pre adblue trucks) 15-40 semi over the last 25+ years on my 80's with no effect ever. It certainly isn't critical on a 4.2 24V engine and fully synth is a waste of money. I've never subscribed to changing oil on a "time basis" only a 5K mileage interval.
To put it into perspective when we moved to all adblue trucks and the bulk oil tank ( 10-40 mineral oil long drain) had 30-40 gallons left we couldn't use I used it up over a period of time on my 60, 80, D4D 90, V6 90, my 100 series and several changes on the 120 and the effect it had on the engines, none.
Its more important to change the oil every 5K with a genuine filter than be worrying about this oil or that oil, I wouldn't put 0-30 in though, its too thin.
Years ago, pre adblue days we had 3 trucks ( DAF's) which we knew we were going to decommission so we ran them on the waste engine oil out of the cruisers and other cars etc as an experiment. we never changed the oil, just the filter once a year and kept topping them up with waste oil. they ran for a further 3 years till we exported them with still perfect engines.
The moral is, there's a lot of bull about this oil, that oil etc.