Some people use the barrels rather than muffs to limit the noise. When you
run one in a tank, you can sure see how much oil is discharged from a 2
stroke!

"WCD" wrote in message
news
Not really related to boatbuilding, but I've often seen boat shops with
a 55 gallon drum filled with water to run outboard motors in. Why is
this done?

Is it maybe better for the motor to run with some load on the propeller?

Don't want to mess up my new motor!