Anyone running 5w40 in 4 stroke outboard? Thinking of getting a 4 stroke suzuki or yamaha for my jon boat. I use T6 rotella in my jeep and scooter so it would be nice to use the same oil for several applications. I duck hunt in the winter so the 5w would be good for that, but would it thin out too much in the summer heat? Im in Tennessee so it gets in the high 90s every summer and low 100s on occation.
Thanks
Thanks
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