Originally Posted By: njohnson
Our family owns Kubota tractors. I thought of using Kubota oil, to keep things "Kubota", but, the funny and crazy thing is that our local Kubota dealer doesn't even stock the Kubota engine oil, the transmission fluid, yes, the Kubota Super UDT, but, not the engine oil. I read on the forums as well, that Kubota engine oil is made by Valvoline.
So, a couple years ago, I called Valvoline and talked to a gentleman in the technical department. I told him how we have the Kubota tractors and asked what oil to use in them. He confirmed that, yes, Valvoline makes the oils for Kubota. He said he would use the Valvoline All Fleet in the tractors, because, he said, that is what Kubota puts in them at the factory. Now, he didn't say that All Fleet and Kubota are the same oil, that the Kubota oil is rebranded All Fleet, just that Kubota uses and fills the tractors at the factory with All Fleet.
He also said when I asked him about using Premium Blue, because Premium Blue is available almost everywhere, that the PB is made mainly for on-road vehicles. The All Fleet is designed and made off-road equipment as well. It offers extra protection for off-road engines versus Premium Blue.
He fed you a line of "stuff" that made you happy and hang up. And VPB can be used off-road ...
"All Fleet" is most certainly made for "on road" stuff:
http://hd.valvoline.com/sites/default/files/all_fleet_e900_rev_5.pdf
Here is the "Heavy Duty":
http://hd.valvoline.com/sites/default/files/valhd_1602.pdf
And the VPB:
http://hd.valvoline.com/sites/default/files/20170228_premium_blue_8600_es_0.pdf
Most of the time, fleet type lubes are more basic as a value leader. No OEM is going to fill the crankcase with expenseive lubes.
The VPB is their up-market offering.
Either way, most any of these lubes are going to be more than just fine.