make oil changes great again !

aerobat77

Active Member
Aug 12, 2014
816
germany
Boat Info
Boatless
Engines
Boatless


i purchased a small 12v electric oil pump and it works like a champ !

the oil change on the boat was never so quick , easy and clean for me . i can only recommend this solution !

best regards
 
Brand, price? I have the big pricey bucket kind, that would be a potential replacement when it dies.
 
I picked this one up last year with one of their 20% off coupons you find online.
https://www.harborfreight.com/12v-dc-transfer-pump-290-gph-63324.html

Its an impeller style, with a spare in the box. I prelubed the impeller with oil ensuring I didnt destroy.

The only challenges: finding a hose that fits on/over the dip stick. The hose (more specifically the hose end thats crimped on) has to have an inside diameter large enough to fit over the dip stick. using hose thats reinforced and doesnt collapse given its hot oil and under suction.

Overall - worked great, got the job done quick and effortlessly, and its affordable (cheap) considering the other options out there.
 
I picked this one up last year with one of their 20% off coupons you find online.
https://www.harborfreight.com/12v-dc-transfer-pump-290-gph-63324.html

Its an impeller style, with a spare in the box. I prelubed the impeller with oil ensuring I didnt destroy.

The only challenges: finding a hose that fits on/over the dip stick. The hose (more specifically the hose end thats crimped on) has to have an inside diameter large enough to fit over the dip stick. using hose thats reinforced and doesnt collapse given its hot oil and under suction.

Overall - worked great, got the job done quick and effortlessly, and its affordable (cheap) considering the other options out there.

Most Mercruiser dipstick tubes have 3/4 MHT at the top to facilitate oil changes.
BTW: one of the pictures for that pump on the HF link says it is for clear water, but I guess the pump is cheap enough that it’s worth seeing how long it holds up to oil changes.
 
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Aerobat... wanna make it even faster and cleaner? Attach the pickup hose directly to the dipstick tube instead of sticking a smaller hose down into the tube. Either with a female garden hose fitting like JVM mentioned, or even just using a 3/8" ID hose clamped right ONTO the dipstick tube.
 
...or even just using a 3/8" ID hose clamped right ONTO the dipstick tube.

That little nub of 3/8 OD tube at the end is what gave me some grief. I bought a prefab washing machine hose (female-female) and it would not go over the 3/8 tube. Finally found a regular garden hose adapter which worked - but even then, I still think I needed 2 rubber garden hose washers to get a good seal.
 

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You guys buying from Harbor Freight should download their app to your phone. The app frequently has 30% coupons that you can use for any purchase and also has a lot of coupons that don't come in the mailers.

Easy Peasy. When you want to use a coupon you just open it up on your phone. They can scan the bar code the same way they do when you have coupon in hand.
 
I bought this pump and attached it to a bucket similar to the expensive pump kits. I just changed my oil Saturday, and it worked great.
 
You guys buying from Harbor Freight should download their app to your phone. The app frequently has 30% coupons that you can use for any purchase and also has a lot of coupons that don't come in the mailers.

Easy Peasy. When you want to use a coupon you just open it up on your phone. They can scan the bar code the same way they do when you have coupon in hand.

Great tip!

Bennett
 
Here's my set up. I replaced the cord with a longer one, and it has a switch in it, it's a lampshade cord.
20200420_103119.jpg
 
Greg is that a 5 gallon bucket?

For those of you who have diesels and use more oil, here's a tip. Head to your nearest restaurant and ask them to save you some of the empty plastic bottles their cooking oil comes in. I got a bunch from the restaurant at the top of the dock. They're packaged in cardboard for a little added protection, are sturdy, hold about 4 gallons and there is a sturdy handle for lifting/carrying.
 
+1 on the hose that fits over the dip stick tube. Got my transfer pump from Home depot. It gets a workout with the diesels, trannys & genny.
 
It's 4 gallons Mike. I didn't want a 5 gallon one.
 
I used to have a similar pump. Then I switched to outboards. I can do my 4 OBs in less time than it took for one I/O.

Gotta love them Mercury 4-strokes.
 
Greg is that a 5 gallon bucket?

For those of you who have diesels and use more oil, here's a tip. Head to your nearest restaurant and ask them to save you some of the empty plastic bottles their cooking oil comes in. I got a bunch from the restaurant at the top of the dock. They're packaged in cardboard for a little added protection, are sturdy, hold about 4 gallons and there is a sturdy handle for lifting/carrying.

I do about the same. We get glycerin that comes in about 2.8 gallon heavy plastic containers with screw on caps. Work perfect-2/engine + 1 for the gen.......Has a handle and can easily pour into the used oil receptacle at the marina.....

Bennett
 
Brand, price? I have the big pricey bucket kind, that would be a potential replacement when it dies.

i bought it in germany from amazon . price is close to nothing for the job it did .

https://www.amazon.de/UISEBRT-12V-6...ords=ölpumpe+elektrisch&qid=1587478322&sr=8-8

it comes with a suction and discharge hose , the suction hose fits the dipstick on a 5.0 mpi nicely and is long enough to reach the bottom of the oil pan . it can pump oil , water and dieselfuel .

it had no problem to drain the cold oil in few minutes , you can hook it up directly to a battery in the engine bay , switch it on and relax .


i tried a vacuum oil pump , i tried the discharge hose and this solution is the best i ever saw .
 
I use the small Walmart Shop Vac for the same thing. Slurps it out instantly for $29, and I store it in a trash bag for drip prevention. It works for brake fluid, oil, or anything you can think of.
 
Aerobat... wanna make it even faster and cleaner? Attach the pickup hose directly to the dipstick tube instead of sticking a smaller hose down into the tube. Either with a female garden hose fitting like JVM mentioned, or even just using a 3/8" ID hose clamped right ONTO the dipstick tube.

will enough vacuum be created to suck up the oil if you attach a female hose on the dipstick tube instead of putting a hose inside the oil pan? ( engine has a breather i think )

do i understand you correctly ?
 
will enough vacuum be created to suck up the oil if you attach a female hose on the dipstick tube instead of putting a hose inside the oil pan? ( engine has a breather i think )

do i understand you correctly ?
Yes, it's actually quite normal/standard to do it this way in the industry (with cars, too). The dipstick tube goes extremely close to the bottom of the pan. Years, I decided to double check - sucked it the way I'm suggesting, then I drained the oil through the plug to see if anything was still there. I got MAYBE 6 ounces out - very insignificant.
 
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