Re: 1955 Johnson 5.5
Yep, 24:1 ratio (1 quart TC-W3 rated oil per 6 gallons of regular gas) is the way to go. It's a tad leaner than the original 16:1 due to the better oil quality, but not so lean that the motor will want to toss connecting rods out the side of the crankcase...<br />- Scott