[ercoupe-tech] black oil

[airslot4518]

First if all the #s are ok if it anint broke so don't fix it. Does your engine 
have an oil filter --spin on type if not the screen is only catching rocks and 
pebbles 2nd if your using detergent oil the oil will get black pretty quick. 
Even with a filter the oil in my bird is pretty dark by 8/10 hrs thats why I 
change it every 25 hrs