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1960's johnson fuel mix
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<blockquote data-quote="Pappy" data-source="post: 143170" data-attributes="member: 3278"><p>To answer your question...Yes, technology changed. The overall change from Bushings to bearings along the crank and rods allowed the leaner fuel/oil mix. Engines that have bushings should always be run on the richer 24:1 mixture regardless of todays oils vs yesterdays oils. Bushings simply require more oil to remain safely lubricated. The nice thing about todays oils in older engines is that they seem to smoke less. Yours should do well on 24:1 as it has a thermostat which will warm the engine and further reduce smoke.</p></blockquote><p></p>
[QUOTE="Pappy, post: 143170, member: 3278"] To answer your question...Yes, technology changed. The overall change from Bushings to bearings along the crank and rods allowed the leaner fuel/oil mix. Engines that have bushings should always be run on the richer 24:1 mixture regardless of todays oils vs yesterdays oils. Bushings simply require more oil to remain safely lubricated. The nice thing about todays oils in older engines is that they seem to smoke less. Yours should do well on 24:1 as it has a thermostat which will warm the engine and further reduce smoke. [/QUOTE]
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