Is there a trick to extracting oil from dipstick assembly 357 Alpha 4V

[PDW911]

Was going to try to change oil and put on new oil filter this week end on my new re-built 357 Alpha 4V. I purchased a motor operated transfer pump with tube that extends into dipstick...I ran engine for about 10-12 minutes to thin out oil. Tube inserted into dipstick housing bottomed out and I started to transfer...only removed about 1 qt of oil and then pump acted like the "pan" was empty...thought this strange...re-checked and found the dipstick indicated it had oil (actually read add oil as I had transferred some oil). I checked all of the fittings and all of the connections were tight on pump, shouldn't have been sucking air but that is what acted like, I even adjusted the height of the tube, thinking I clogged it on the bottom of the pan...but it still didn't extract oil

Does this make sense to anyone..does the dipstick assembly turn after it hits the pan??

Thx

 

[alldodge]

I don't use the tube because you need to make sure it is just at the bottom of the dip stick tube. Get a piece of 3/8 fuel line and a small hose clamp. Put the hose on top of the dipstick tube and tighten it snug. I have the same type pump

 

[Alumarine]

If you have different size hoses try putting a hose OVER the dipstick tube.
Use the dipstick tube to suck the oil out.
The dipstick tube should have threads on it the same size as a garden I hose I believe.

 

[muskyfins]

I have the bicycle pump style. (had issues with motor driven style) But I had an issue once where I needed a longer tube. Took me a long time and several trips to hardware store to figure it out. The original tube I was using should have worked just fine, but it didn't. Not sure what was going on in oil pan, but used a significantly longer tube to get the job done.

 

[PDW911]

marc c..that is a pretty big dip stick tube if it has threads the size of a garden hose.....AllDodge....that may be the answer..so I can draw the fluid up through the dipstick tube itself???....Muskyfins, the extractor tube is excessively long, but as I indicated when I measured it against the dip stick itself, the tube bottomed out against something out about and inch longer; so I backed out up slowly with no change in extraction flow

 

[alldodge]

so I can draw the fluid up through the dipstick tube itself???....

Yep, right out the tube

 

[PDW911]

Thanks...I now have a Sat AM project

 

[Scott Danforth]

marc c..that is a pretty big dip stick tube if it has threads the size of a garden hose.....AllDodge....that may be the answer..so I can draw the fluid up through the dipstick tube itself???....Muskyfins, the extractor tube is excessively long, but as I indicated when I measured it against the dip stick itself, the tube bottomed out against something out about and inch longer; so I backed out up slowly with no change in extraction flow

the dipstick sits about 5" above the bottom of the oil pan. unless you got it all the way to the bottom, you wouldnt get it all out. Marine dip stick tubes do run to the bottom of the oil pan to allow you to drain oil by using the tube as mentioned.

 

[alldodge]

the dipstick sits about 5" above the bottom of the oil pan. unless you got it all the way to the bottom, you wouldnt get it all out. Marine dip stick tubes do run to the bottom of the oil pan to allow you to drain oil by using the tube as mentioned.

Mine does (502 and 454), pull 7 quarts out, put 7 quarts back in w/filter.

 

[bruceb58]

Mine does (502 and 454), pull 7 quarts out, put 7 quarts back in w/filter.

The 7.4L in my boat(Volvo Penta) takes 9 qts with filter! Would think they would all use the same sized pans.

The Volvo dipstick tube runs outside the engine to the drain plug which makes it perfect for sucking out of the tube.

EDIT: I see they vary on Mercs http://www.mercruiserparts.com/mercruiser-gas-engine-oil-capacity

 

[wahlejim]

Sometimes with these pumps a little prime will help. Pour some fresh oil in the pump outlet and hold the outlet tube vertical until it primes. Also, some of these pumps have soft, black rubber connections at the pump. These tend to kink pretty easily.

 

[wahlejim]

This is the oil changer I have, helps to prime it a bit and the black connection kinks easily



This is the style dipstick that has the same threads as a garden hose.

 

[alldodge]

Agree, I also pour a tad bit of oil in the hose to lube the pump when first turning on, it helps and saves the impeller

Edit: I use this type
https://www.amazon.com/dp/B000NJ65N...d_t=201&pf_rd_p=1944687762&pf_rd_i=B0067MVJRI

 

[bruceb58]

Edit: I use this type
https://www.amazon.com/dp/B000NJ65N...d_t=201&pf_rd_p=1944687762&pf_rd_i=B0067MVJRI

I use that exact type too.

 

[Leardriver]

I use a "sacrificial" Shop Vac, the one that is $29 at Walmart. I use it for oil, brake fluid, power steering flushes, and nastiness, and store it in a trash bag to keep the drips at bay.
You can duct tape a small​ clear plastic tube into the vacuum end, and slurp oil out very quickly and effortlessly.

 

[Bondo]

Ayuh,.... I've got this one, 'n use it for alota things besides changes the oil in the fleet of barges,.....

 

[Scott Danforth]

I put a remote drain hose on the bottom of my pan when I had the motor out last time. Now I simply pull it out the bilge plug, put into the catch pan, and pull the cap off the end. drink a beer or two and the oil has all drained.

I couldnt even tell you where my electric oil extraction pump is anymore in the garage.

 

[muskyfins]

Ayuh,.... I've got this one, 'n use it for alota things besides changes the oil in the fleet of barges,.....

+1. Yep that's the one I've got. Also works for draining trim pump reservoir and trim tab reservoir....oh and power steering.

But as I said, I used a tube pushed at least 5" longer than the dipstick. Maybe it was hitting a rod cap and hanging up or something, but that's what eventually did the trick.