Oil Change Pump System

Aerobaticflyer

Aerobaticflyer

New Member
Mar 24, 2009
263
Bradenton, FL.
Boat Info
390 Sundancer 2005
Engines
Cummins 380's
Before I took a stab at doing my first oil change on my boat I thought I'd ask if anyone had any tips or things to look out for when operating the oil pump out system.....it looks too easy so I must be missing something.

Turn the valves hit the pump to pump into a container that holds 4+ gallons (diesels) then reverse the pump and pump the clean in? Can't be that easy........
 
Just warm up the oil before pumping. The hardest part is lifting the oil out of the ER.
 
Aerobaticflyer said:
Before I took a stab at doing my first oil change on my boat I thought I'd ask if anyone had any tips or things to look out for when operating the oil pump out system.....it looks too easy so I must be missing something.

Turn the valves hit the pump to pump into a container that holds 4+ gallons (diesels) then reverse the pump and pump the clean in? Can't be that easy........
Click to expand...
Maybe I'm paranoid, but I don't pump the clean oil into the engines with the oil changer....a possibility of an impeller "melt down" and then you would have pieces of it in your engine. Just put in the oil the old fashioned way....
 
Well, job done and it really is that easy. Very slick system.....now for the generator.....4.2 qts will be anti-climatic after doing the engines!
 
Here are the steps I use:

Engines Oil Change
Run engines to warm up the oil for about 10-15 minutes.
Make sure the engines sit for a while to allow all oil get to the bottom pan.
Pump out old oil,
Replace oil filter filled with new oil.
Put in new oil via funnel to minimize amount remaining old oil get back in the motor.
Don't forget to turn OFF the valve on the pump for the side that was used last.

I use the same procedure for the generator.

After 2 mains and genny are done all 3 valves should be in OFF position.
 
Last edited:
Alex F said:
Here are the steps I use:

Engines Oil Change
Run engines to warm up the oil for about 10-15 minutes.
Make sure the engines sit for a while to allow all oil get to the bottom pan.
Pump out old oil,
Replace oil filter filled with new oil.
Put in new oil via funnel to minimize amount remaining old oil get back in the motor.

I use the same procedure for the generator.
Click to expand...

What no pictures? I had my beer and popcorn ready too.....
 
Do y'all really need pictures for a 3 step procedure..........?

I make one change to the above list. When you pump the old oil out, there are several inches of horizontal hydraulic lines holding old oil. If you just reverse the pump...........and it isn't like a seawater pump, it is designed to run both directions without shearing off impeller blades......you will leave an amount of old oil in the engine since everything left in the lines is going to go right back into the motor. When I pump all the old oil out, I pour about a quart of new oil in the engine and then pump it out so I am leaving new oil in the pump out lines. Then I reverse the pump and pump new oil into the engine.

Mike is right........the hardest part of servicing my boat is lugging 15 gal of new oil into the engine room and then hauling the old oil to the waste oil tank in the shop. The mechanics usually take pitty on me....one advantage of advancing years!........and let me use one of their golf carts.
 
Last edited:
OK, I'll stop being paranoid about impeller now. The quart of new oil at end of pump out is a great idea Frank, thanks for the tip!
 
Thanks...Alex, could you put a video on utube for us.....Kidding, but it would be great if searay used utube for "instructional video's" like other manufactuers
 
Ok, I'll make a video of me flicking a switch. I'll call it the oil change insructional video.
 
Cummins are susceptible to blow-by due to overfilling. Better to refill the ole fashion way with the proper measured amount.
 
timjet, if you use a clean bucket to pour the new oil into and have the oil change system suck it out of that bucket, you will be keeping track of the new oil that's going into the engine. As an added check, I let the new oil settle into the oil pan then use the dipstick to check the level.
 
Gee, I thought all Cummins engines had full marks on the drip sticks.

Y'all are going to have to come up with some better reasons not to use the oil change pump for refilling with new oil.........
 
Do make sure that only one valve is open when you start to fill. I was filling last weekend and noticed the genny was still open. had to drain a bit of oil back out, just reversed the switch! I am glad I caught it early...
 
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