I cannot think of one reasonable reason why you cannot. I have been using it in mine since we bought the Axis. I think I have about 130 hours on it now. Here is the problem you will have. There is no 30 weight synthetic on the market. If anyone out there can find one, let us all know. Also, I use 15-40 which is typically used in diesel trucks and older Volvo autos. I used to find it in synthetic very easily, but now, nope. I was able to find a few brands in 15-40 synthetic and ended up with Royal Purple brand, ordered from Amazon. Oh yes, Schaeffer's out of St. Louis, MO, is the other one that has it.
https://www.schaefferoil.com/about.html
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