No.
If it's still the OE/factory fill oil, it's a 75W-90 anyway, but a pretty good full synthetic 'special' from Castrol.
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year I brew my own special blend in my lab:
X amount of Husqvarna Xp + X amount of maxima 927......mixed at the right ratio is actually creates more power
You check them WEEKLY ??? Why, does it leak that badly ?
On oils I use Castrol Syntrans in my R380 and Syntrax in my LT230 ,
The r380 has a remote finned cooler about 600ml extra capacity and the LT230 had a rover canada sump, They both run as cool as a cucumber - (Im towing a Van full time now.) any Hypoid 85w 140 in the Sals and any diff oil in the front with some molybond & moreys mix in the CV's, Td5 runs HPR 5 full syn