End of Season Maintenance

Boilers2000

Petty Officer 1st Class
Joined
Jun 15, 2018
Messages
252
I was only able to get my boat in the water 3 times this season, booooooo, 4.3lx engine and alpha one Gen2 drive. With that little water time, could I get away with out change engine and drive oil before winterizing the engine?
 

Scott Danforth

Grumpy Vintage Moderator still playing with boats
Staff member
Joined
Jul 23, 2011
Messages
49,579
I wouldn't

Engine oils develope acids from the combustion process

You could have a gear box seal leak

Your bellows could be leaking

There is a reason that the maintenance cycles are 100 hours or annually
 

poconojoe

Lieutenant Commander
Joined
Sep 10, 2010
Messages
1,966
If your drive lube had any water intrusion you could be looking at freeze damage come Springtime.
It's not worth the chance. It's not that expensive or much work to change the drive lube.
 

ROY WILLIAMS

Chief Petty Officer
Joined
Aug 8, 2022
Messages
400
I inspected in october boat .. take out the out drive see if its water and the bellows . lube it .. then out drive is inspected the oil is clean , then flush out the water in the engine ...use a air compressor .. .then use anti freeze in the engine ...then I did marvel mystery oil 1 OZ in the cylinders ...then cover the carb plastic sheet ,, seal it up ..
remove the drain plug on the boat ..
I replaced the engine oil in the spring ...
put moth balls in the boat ....
 

dingbat

Supreme Mariner
Joined
Nov 20, 2001
Messages
16,082
I wouldn’t skip changing the engine oil but there is no reason you can’t skip changing LU if no water is present.
 

dingbat

Supreme Mariner
Joined
Nov 20, 2001
Messages
16,082
No reason to change the LU unit oil with such little use if no water is present.
After the motor has sat a day or two, crack the drain screw to get a sample. If you don’t get any water or milky oil your good to go until next season
 

racerone

Supreme Mariner
Joined
Dec 28, 2013
Messages
37,833
Agreed with 20 hrs a season gear oil can be used for many seasons.-----After all many rear axles in pick-up trucks rarely get oil changed for years and years..----If there is no water in the gear oil it is good for another season.
 

dubs283

Vice Admiral
Joined
Jul 27, 2005
Messages
5,322
many rear axles in pick-up trucks rarely get oil changed for years and years..
Yeah, we're talking boats here. Mainly sterndrives which take more straight consistent torque and power than most ordinary trucks.
 

racerone

Supreme Mariner
Joined
Dec 28, 2013
Messages
37,833
I am well aware of how much it takes to drive a boat at 40 MPH !!!----Point is folks drain out very good gear oil on the outdrive and rarely even check rear axle on the pick-up truck !
 

dubs283

Vice Admiral
Joined
Jul 27, 2005
Messages
5,322
Awesome! You inspect/change the differential fluid on your truck. Keep it in the truck forum

If you really want to talk rear axels let's talk checking brake shoes on a Dana axel
 

poconojoe

Lieutenant Commander
Joined
Sep 10, 2010
Messages
1,966
I don't use my boat (4.3L Mercruiser) very hard, in fact I'm pretty gentle with it. I'm guessing I don't use it as much as most either.
When I change the drive lube every Fall, it is pretty black compared to the new lube.
So, I think I'll continue changing it each time I winterize.
 

Scott Danforth

Grumpy Vintage Moderator still playing with boats
Staff member
Joined
Jul 23, 2011
Messages
49,579
Awesome! You inspect/change the differential fluid on your truck. Keep it in the truck forum

If you really want to talk rear axels let's talk checking brake shoes on a Dana axel
Looking for Huck brake parts....LOL
 

ROY WILLIAMS

Chief Petty Officer
Joined
Aug 8, 2022
Messages
400
I don't use my boat (4.3L Mercruiser) very hard, in fact I'm pretty gentle with it. I'm guessing I don't use it as much as most either.
When I change the drive lube every Fall, it is pretty black compared to the new lube.
So, I think I'll continue changing it each time I winterize.
look up the gear oil and change it if is an off color .... also the water is in it and it is a milky color..inspect the air pressure 7-10 PSI..see if its a leak ....
you inspect it in the fall great !
 

Searay205

Chief Petty Officer
Joined
May 27, 2018
Messages
468
If boat stored in water then change it as often as possible. If stored in encloses storage and you never see a drip of gear lube on floor and you never see a drop in gear lube level than you probably get away with skipping on gear lube. On other side for $25? who cares drain and change and not worry about if over winter. Same with oil, super cheap. Maintenance is fraction of pennies on the dollars vs 1 repair.
 
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