How does one change the lubricating oil in a 3GM30? There is no drain
plug in the base.


Ignore the Loco character. He's an idiot. Buy a electric oil changing pump or
one of the small brass handheld units. They come with a hose designed to fit
down the dipstick hole. This will enable you to pump out most of the oil. Try
moving the hose around to get it to the back of the oil pan. You should be able
to get all but about a pint of the oil out, which is fine. Now add new oil
minus the pint and you're set.
If you're dealing with an oil contamination issue, you'll need to do at least 2
changes.

Good luck,

RB

Ignore the Loco character. He's an idiot. Buy a electric oil changing pump


Hey don't pay any attention to this dimwit. He knows nothing about boats. Buy
one of those vacum pump cans. Stick the hose down your dipstick tube, pump
about 40 times, release the trigger and go drink a Coke. The vacum does all
the work and when it's finished all the ould oil is in the can. Pick it up and
walk away. Those electric oil change pumps are a mess.
S/V Express 30 "Ringmaster"
"No shirt, no skirt, full service"

Hey don't pay any attention to this dimwit.


Yeah, Loco, I'm sure he'll listen to you after you pot-shotted him for no
reason. You're such a jerk!
Why don't you learn to read a header, pinhead? Doug should learn this too, but
he's too busy seeing if his trawler is more expensive than his neighbor's boat!

RB

, but
he's too busy seeing if his trawler is more expensive than his neighbor's
boat!


ROFLMAO! Coming from the dimwit this statement
.................................
S/V Express 30 "Ringmaster"
"No shirt, no skirt, full service"