1983 Johnson/Evinrude 2 thru V-6 outboards Service Repair Manual P/N 393765, Page 73Get this manual
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Off-Season Storage 1 Use OMC 2+4 Fuel Conditioner in your fuel mixture to stabilize the gasolineIt eliminates need for draining fuel for up to one year of storageAdd one ounce of OMC 2+4 for every gal