Not according to Kawasaki.My new JD FR651V recommends 5w30 up to 104F and 5w40 over that. I've got 5w30 in it now and will go to the 5w40 next year.
FR651V | Kawasaki Engines USA
Reliability is the top priority in the Kawasaki FR651V engine, ideal for residential use. Smooth operation contributes to quieter performance while commercial-grade power helps provide the type of results you’ll want to replicate time and time again. Make at-home outdoor maintenance something to...
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