Home › Forum › Ask A Member › Oil Sludge from resurrecting a 1957 35 hp Johnson RJE-19 › Re: Oil Sludge from resurrecting a 1957 35 hp Johnson RJE-19
May 28, 2017 at 1:13 pm
#58514
That sludge is NORMAL! You put oil in the gas which does its’ job lubricating the cylinders and most of it isn’t burned in the process and goes out through the exhaust. My ’57 Lark did the same thing. Take it out and give it a good run. And if you’re concerned about the "sludge", get a biodegradable 2-cycle oil.