Engine Oil Extraction

D

Darras

New Member
Joined
3 Jul 2017
Messages
7
Visit site
I have a Kubota based 10 HP and want to drain the old engine oil, never done it before but read that you have to use some sort of extraction pump to suck it up through the dipstick pipe.

The dipstick pipe doesn't seem very big, what diameter tube do these pumps have to fit down into the sump ?

Does the engine need to run beforehand or will it work with cold oil ?
 
Darras said:
I have a Kubota based 10 HP and want to drain the old engine oil, never done it before but read that you have to use some sort of extraction pump to suck it up through the dipstick pipe.

The dipstick pipe doesn't seem very big, what diameter tube do these pumps have to fit down into the sump ?

Does the engine need to run beforehand or will it work with cold oil ?
Click to expand...
Do you not have an oil filler cap? If so use this.

Best done warm.
 
The Pela extraction tube fits down the dipstick tube on the Nanni. Yes, run the engine as it makes the oil thinner and easier to extract. The tube needs to go to the bottom of the sump, but don't expect to get everything out so your refill will be less than the nominal capacity.
 
Dip stick oil pumps come with a small bore tube. If you want to make a permanent job, get a Reverso pump and plumb it into the sump drain. You can then empty and fill just using the pump. You can also plumb it into the gear box using two way valves. Makes oil changing a real pleasure and no longer a chore. Quite expensive but once you've used it once you will never want to use anything else!
 
PCUK said:
If you want to make a permanent job, get a Reverso pump and plumb it into the sump drain.
Click to expand...

That presumes that the engine has a sump drain. My current Volvo does, but the Yanmar before it did not. I don't know about the OP's Nanni.

Pete
 
RichardS said:
Maybe I'm missing something here .... but how do you get the pipe round the corner past the rockers and down one of the drain holes so it reaches the bottom of the sump? :confused:

Richard
Click to expand...
I usually push gently, then measure the amount that I have extracted to ensure that I have removed as much as can be reasonably expected (+/- 5% of the capacity as noted in the manual), but my late father was a marine engineer and showed me a few tricks. :D

But I don't have a Kubota based engine.
 
Sandy said:
I usually push gently, then measure the amount that I have extracted to ensure that I have removed as much as can be reasonably expected (+/- 5% of the capacity as noted in the manual), but my late father was a marine engineer and showed me a few tricks. :D

But I don't have a Kubota based engine.
Click to expand...

OK .... I can see how that would work if one of the oilways back to the sump was more or less below the filler neck but I can't recall seeing an engine designed like that although my experience is with car engines. However, if you can do it, then why not. :)

Richard
 
Invest in a small 12v electric pump available from just about anywhere,most recently Aldi or Lidles, for around £12-£25 pounds.
Mine came with two sizes of inlet pipe,one small enough to go down any dipstick tube.
It will happily remove 11L of hot oil from a Volvo Penta 200hp engine at about 10 mins per engine.We have two engines.
It takes a bit longer to shift 25 litres from the 300hp Volvo Penta x 2
You pump it directly into a oil drum..... only one operation.
Unlike the Pela where you have to pump the thing up to get vacuum, then wait for the oil to be drawn (eventually) in one go, if you are lucky.
Then you have to empty the Pela into your oil drum trying not to spill filthy oil everywhere and then to cap it all afterwards clean out the Pela container .

An electric pump is also useful for pumping out bilge water from difficult corners and for emptying your car diesel tank when you a have filled it with petrol.
Try doing that with a Aquavac. :)
 
Last edited:
oldgit said:
Invest in a small 12v electric pump available from just about anywhere,most recently Aldi or Lidles, for around £12-£25 pounds.
Mine came with two sizes of inlet pipe,one small enough to go down any dipstick tube.
It will happily remove 11L of hot oil from a Volvo Penta 200hp engine at about 10 mins per engine.We have two engines.
It takes a bit longer to shift 25 litres from the 300hp volvo penta
You pump it directly into a oil drum only one operation.
Unlike the Pela where you have to pump the thing up to get vacuum, then wait for the oil to be draw (eventually) in one go, if you are lucky, then you have to empty the Pela into you oil drum trying not to spill filthy oil everywhere and then to cap it all clean out the Pela container .

The electric pump is also useful for pumping out bilge water from difficult corners and for emptying your car diesel tank when you a have filled it with petrol.
Try doing that with a Aquavac. :)
Click to expand...
Why do you have to clean out the Pela container?:confused:
 
oldgit said:
Invest in a small 12v electric pump available from just about anywhere,most recently Aldi or Lidles, for around £12-£25 pounds.
It will happily remove 11L of hot oil from my Volvo Penta 200hp engines at about 10 mins per engine.
It takes a bit longer to shift 25 litres from the 300hp volvo penta
You pump it directly into a oil drum only one operation.
Unlike the Pela where you have to pump the thing up to get vacuum, then wait for the oil to be draw (eventually) in in one go,if you are lucky and then have to empty the Pela into you oil drum and then to cap it all clean out the Pela.
The electric pump is also useful for pumping out bilge water from difficult corners and for emptying your car diesel tank when you a have filled it with petrol.
Try doing that with a Aquavac. :)
Click to expand...

Do you have a link to an electric pump which will pump water, engine oil and diesel?

I use two different pumps and the water one has packup up so I'd like to replace it with one that does everything but all the ones I've seen don't.

Richard
 
Pela pumps work, but mine doesn't hold its vacuum for long, so I have to pump it often. It took an hour until it drew air today, even with the oil warmed up, but last time it was only about 40 minutes. I got 2 litres out plus a filter full, rather than the 2.75 that's supposed to be in there. An electric pump would be quicker no doubt. I don't 'clean out' the pump, I just empty it.
 
I use a hand pump on my Yanmar (Kubota base) via the dip stick. One day I'm going to get lazy and invest in an electric pump instead.

Still it gets most of the oil out (seemingly much quicker than a Pela based on StormNorm's figures). Like most above I run the engine to heat the oil first. Most that doesn't come out is stuck in the filter. If I change the filter I get most of the oil that is in the engine.

Every three or four oil changes I use flushing oil first as an attempt to make a more thorough oil change (if nothing else it means two changes rather than one so less of the old oil left).
 
RichardS said:
Do you have a link to an electric pump which will pump water, engine oil and diesel?

I use two different pumps and the water one has packup up so I'd like to replace it with one that does everything but all the ones I've seen don't.

Richard
Click to expand...

I'd like one for water with a long reach to get at the bits of water under the engine that the bilge pump won't suck.
 
You must log in or register to reply here.

Other threads that may be of interest

Refueler
Darn it ...... bl***y engine wont start - want to lift out boat.
2
Replies
34
Views
2K
Refueler
Refueler
O
“The Dog that Didn’t Bark:” Yanmar. 4L HASTE.
Replies
2
Views
265
oldgit
O
ianc1200
Sureseal shaft seal.
2
Replies
20
Views
507
ianc1200
ianc1200

Share this page

Top