It does, apparently. But not much to make any significant difference. 10.2 vs 10.5 right?
Fact of the matter is: Rimula, Delo or Delvac, you cannot go wrong with either. They're pretty much same and it all boils down to personal choice and convenience.
Delo has been here since forever. As a first choice of drivers for all kind of machines: from Land Cruisers to cargo trucks, from farm harvesters to hydraulic press, from power generation to earth moving equipment.
Rimula RX4 is just under its pilot run and might need to stick in here for a decade before it'd cash any glory. Their previous versions never stood up against Delo Gold though.