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Premix ratio

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I have been doing research on what premix ratio to use. I have stumbled across many different forums and there all different. The bike I have is an 1987 RM80H. I want to run 40:1 but I don't know if it will have enough lube. Should I run 32:1 instead?

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Run what the manual recommends. In most cases that is 32:1. If you run 40:1 your bike will be running richer and you'll most likely have to rejet leaner. There is no reason to run anything other than 32:1. If you're fouling plugs something else is wrong such as a worn top end or incorrect jetting, not the mixture.

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I also believe the owner before was running golden spectro and that's 50:1 but you can only order it now

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