My 2017 sport 170 has an unusual habit of occasionally sitting "hunting" on Rickover, revs will lift and drop between about 700 and 1300 and this only happens when it's cold, maybe say after a short run of a mile to a mile and a half, has done it probably 10 times maybe in the 3 months I've had it.
Anyone else had this? Otherwise van is fine other than a bit thirsty, 33mpg average so far, hope it improves with age!
Oh and needed the ad blue topped up with about 12 litres after 4000 miles, is this normal too?