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mmgood

1986 Kawasaki Bayou 300 Synthetic Engine Oil

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Always! I run synthetic in everything I own. Even my old antique engines. It wont fix anything but it wont hurt anything for sure.

Brad_cad

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The only differences between syn/conventional is the viscosity break down.  Bottom line syntheyic will hold up Better, longer etc. Can’t hurt. Only thing I can recommend is once you put it in stick with it until the end ! 

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The only thing I've found is that synthetics will reveal any oil leaks, even those that may not be visible with conventional oil.  I think it is due to the smaller molecular structure.

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I agree with carguydave, I'm using 20wx50w Valvoline full synthetic in my 2001 350 4x4 Yamaha Wolverine. I had no oil leaks the first 3 months I owned the ATV, (acquired the unit in 2016), before I changed to full synthetic, now my cylinder head on the left side has a film of oil from top to bottom. ATV runs great sounds great, and I'm still glad I have full synthetic in my machine. But depending on how old your machine is, it may develop some unsightly leaks.

 

 

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