GT40 5.8-drain plug question

Try a search for winterizing. Use the advanced search and set the time parameter to any date, not the last 6 months. I know I've seen some nice pics of where all the drains are.

You'll have a drain on the hose coming off of the circulation pump and another on the tranny cooler. Most pull the hose from the cooler as the housing can be delicate. The raw water pump is another hose to pull unless you take the pump off and take it inside as some do.

Another problem is that I've seen too many threads on this subject. Now my head is spinning with so much conflicting thoughts and info I've read that I've freaked myself out into thinking I'm incompetent, which is true at this here juncture.

Spence,
Relax there's not much to winterizing the motor.
You already found four of the plugs, there is a fifth plug it is in the front of the motor on the bottom of the elbow next to the water pump.
What I like to do is run a tap in the plug holes to clean the threads then put the plugs back in.
Do you have a heater, shower, dripless shaft bushing? If so don't forget to drain them.

Now the great debate!!! I like to change the oil then run the motor and circulate the anti-freeze through the motor, heater, shower. Others just pull the hose and fill the block that way, both work and both are equally affective.
Circulating the antifreeze just satisfies my anal tendencies. And I even store my boats in climate controlled storage!!

gtxragtop wrote: Make sure the tap you use is a 1/4-18 NPT PIPE TAP. A Pipe tap is tapered as are the drain plugs.

Welcome to CCfan. How about some pictures of your boat?

BTW, I hope that in 3 months Spencer figured it out.

With time, and this website, you'll feel much more confident in doing your own engine maintenance. Turn on the radio, grab a few beers and look it over for an hour or two. You'll also save a bunch of money. Marinas and dealers aren't perfect either...