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#1987099 - 08/15/10 09:47 PM Thoughts on changing oil through the dipstick hole
Spyder7 Offline


Registered: 07/28/10
Posts: 2269
Loc: NL, Canada
Debating doing this on this short OCI after seeing an all-purpose "fluid transfer" pump at Walmart for $15. Reasons I'm considering it:

- I'm cleaning sludge out through short OCIs. I only have 2,000 km on the current oil, but its a mix of dealer dino and different top up oils. I have enough PP on hand for 2 short OCIs, including top up (it was cheap). My M1 EP filter only has 1,500 km on it (dealer forgot to replace the filter, so I did it myself and used one of these). I'd leave it on for this OCI if I go this route.

- Base pan is damaged and there's a self-tapping plug in there right now. I don't want to mess with the self-tapping plug since I'm going to replace the pan within the next couple months anyway. Funds are too tight to do it right now though.

- The desire to try the PP is like an itch I can't scratch. The beauty of the $15 transfer pump is that if it doesn't work, I can return it for a refund. If it does I might find other uses for it later - who knows. Some things just aren't rational :)

- If it works it might be a useful alternative to crawling under the car in freeze-your-@$$-off Jan/Feb cold, for that mid-winter OCI.

Anyone tried draining oil through the dipstick hole on a Toyota?

Edit: I should point out that even if I do this, and it works, its not going to be used as a long term substitute for a new pan and conventional oil changes. The majority of them will still be done the old fashioned way (that was the main reason I bought my rhino style ramps).

-Spyder


Edited by Spyder7 (08/15/10 09:54 PM)
_________________________
2000 Corolla VE 118K km
Syntec 5W30 & QS filter



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#1987113 - 08/15/10 09:56 PM Re: Thoughts on changing oil through the dipstick hole [Re: Spyder7]
Curtis Newton Offline


Registered: 01/18/03
Posts: 645
Loc: Colorado
I use a fluid extractor (through the dipstick) every other oil change on our RX330. It works great.
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1977 MG-B, GTX HM 10W40, 40K

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#1987117 - 08/15/10 09:58 PM Re: Thoughts on changing oil through the dipstick hole [Re: Curtis Newton]
rslifkin Offline


Registered: 06/27/10
Posts: 2187
Loc: Stamford, CT / Rochester, NY
As long as you get the tube to the bottom of the pan, they work fine. It may get a little bit less stuff out, but it's still good enough, especially as a temporary measure. Definitely make sure to change it when good and hot though, it takes forever (and doesn't get quite as much out) when dealing with cold, thick oil.
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#1987169 - 08/15/10 11:14 PM Re: Thoughts on changing oil through the dipstick hole [Re: rslifkin]
HTSS_TR Offline


Registered: 04/17/06
Posts: 12900
Loc: Irvine, CA
Most European, specially MB and BMW, engines of the last 15 years or so were designed to do oil change with a fluid extractor via dipstick tube. I use Mityvac to vacuum the oil in E430 with ease, it is more difficult to extract oil in S2000 and LS400 because it is hard to get the tube to the bottom of the oil pan.
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#1987180 - 08/15/10 11:45 PM Re: Thoughts on changing oil through the dipstick hole [Re: Spyder7]
XS650 Offline



Registered: 12/21/03
Posts: 12385
Loc: Northern CA
Spyder it will be a tedious slow job with a manual transfer pump. You are so limited on the size of a tube you can fit down the dipstick tube that it will take many minutes pumping.

The vacuum extractors are popular because you can pump up a vacuum and walk away while they work.

You should also find out if you can get an adequate sized tube down the dipstick tube. Some cars you can't.

My vacuum extractor worked well on my VW TDI but I couldn't get a realistic sized tube into my Corvette engine. They have some funny shape formed into the bottom of the tube that will only let the dipstick in.
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#1987193 - 08/16/10 12:09 AM Re: Thoughts on changing oil through the dipstick hole [Re: XS650]
Spyder7 Offline


Registered: 07/28/10
Posts: 2269
Loc: NL, Canada
Originally Posted By: XS650
Spyder it will be a tedious slow job with a manual transfer pump. You are so limited on the size of a tube you can fit down the dipstick tube that it will take many minutes pumping.

The vacuum extractors are popular because you can pump up a vacuum and walk away while they work.

You should also find out if you can get an adequate sized tube down the dipstick tube. Some cars you can't.

My vacuum extractor worked well on my VW TDI but I couldn't get a realistic sized tube into my Corvette engine. They have some funny shape formed into the bottom of the tube that will only let the dipstick in.


Good point - but the advantage of the cheap pump is that for very little cost I can see if this method works on this particular car (and how well).

If it'll do it, then I know something better will work and its easier then to rationalize the extra cost (even if its just for the winter OCI, and maybe the occasional summer one for convenience and extra versatility ).

I figure the mid-grade $60-75 pumps would pay for themselves after a few years, even if I just use it for 1 in 3 OCIs. But before I pay that much, I want to confirm it'll work by trying something cheaper and easily returnable if it doesn't.

I have a few factors to my advantage in that, even though the dipstick curves, it doesn't look like anything a flexible hose can't mimic (though I won't know for sure until I've tried it); also this driveway has a nice slope, so with the car oriented in the right direction I might be able to get more out than if it were level.

By the way, even though I know the hand pump is going to be a PITA, I first got the idea off a blog where the guy used an aquarium hose and siphoned the oil out using his mouth (it took him a couple hours to get it all out). Now that's going the hard route wink

-Spyder


Edited by Spyder7 (08/16/10 12:11 AM)
Edit Reason: typos
_________________________
2000 Corolla VE 118K km
Syntec 5W30 & QS filter



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#1987249 - 08/16/10 03:12 AM Re: Thoughts on changing oil through the dipstick hole [Re: Spyder7]
hardcore302 Offline


Registered: 11/23/09
Posts: 2396
Loc: Suffolk County, NY
Will the sludge that is not captured in the filter be sucked up through the pump line?
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#1987265 - 08/16/10 03:49 AM Re: Thoughts on changing oil through the dipstick hole [Re: hardcore302]
Spyder7 Offline


Registered: 07/28/10
Posts: 2269
Loc: NL, Canada
Doubtful. That's why I'm still going to replace the basepan, oil, and filter 3k miles afterward. The Mobil 1 EP filter should trap a lot of it though. In the short time since I've replaced the pcv valve I've noticed improvement just looking through the oil fill hole.

Where I can't do the pan for at least another month (maybe even 2), I view this as progress in the meantime. By the time I'm ready to replace the pan I'll be due for that next OC. And then opening that filter up should be interesting.

-Spyder
_________________________
2000 Corolla VE 118K km
Syntec 5W30 & QS filter



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#1987292 - 08/16/10 06:29 AM Re: Thoughts on changing oil through the dipstick hole [Re: Spyder7]
21Rouge Offline


Registered: 06/04/05
Posts: 1935
Loc: Vinegar Hill
Originally Posted By: Spyder7
seeing an all-purpose "fluid transfer" pump at Walmart for $15.


$15 for a manual pump is a very good price. I use the much more expensive one I got from Blackstone to very easily draw a sample for a UOA. That is all I use it for. If you plant doing UOAs then this pump will come in handy.

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#1987293 - 08/16/10 06:37 AM Re: Thoughts on changing oil through the dipstick hole [Re: 21Rouge]
Colt Offline


Registered: 02/28/05
Posts: 1586
Loc: NJ
I'd be afraid the plastic tube would melt in a very hot engine which would cause a problem.
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#1987296 - 08/16/10 06:40 AM Re: Thoughts on changing oil through the dipstick hole [Re: Colt]
21Rouge Offline


Registered: 06/04/05
Posts: 1935
Loc: Vinegar Hill
Originally Posted By: Colt
I'd be afraid the plastic tube would melt in a very hot engine.


Blackstone sells such pumps for the purposes of drawing a sample of hot oil.



Edited by 21Rouge (08/16/10 06:40 AM)

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#1987309 - 08/16/10 07:07 AM Re: Thoughts on changing oil through the dipstick hole [Re: 21Rouge]
Colt Offline


Registered: 02/28/05
Posts: 1586
Loc: NJ
Originally Posted By: 21Rouge
Originally Posted By: Colt
I'd be afraid the plastic tube would melt in a very hot engine.


Blackstone sells such pumps for the purposes of drawing a sample of hot oil.



Nice for drawing oil samples and the pumping is great for engines with oil filters on top of the engine.
If the filter is under,just use the oil drain plug and get a Fumoto drain valve. smile2
I feel draining gets more contaminants out.
_________________________
'08 Hyundai Elantra Amsoil ALM WIX Filter
'13 Lexus GS350 AWD Luxury Pkg TGMO 0w20 OEM Filter
'15 Mazda CX-5 Grand Touring w/Tech Pkg FF

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#1987322 - 08/16/10 07:20 AM Re: Thoughts on changing oil through the dipstick hole [Re: Colt]
Silber Igel Offline


Registered: 05/31/03
Posts: 318
Loc: Kerville, Texas
I've used my Pella extractor for four years now. Works great on Sienna, VW Turbo Beetle and Camry Hybrid. You do have to jigger the suction tube a bit to be sure you are getting all the oil out. Works best if oil is warm to hot.

I also use it on small engines. Much easier and cleaner than futzing with drain plugs.

I see no reason why you can't use a vacuum system as they have been used on inboard boat motors for years. (Figure jacking up one of those bad boys to change the oil!!!)

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#1987327 - 08/16/10 07:26 AM Re: Thoughts on changing oil through the dipstick hole [Re: Silber Igel]
dparm Offline


Registered: 04/19/10
Posts: 12348
Loc: Chicago, IL
I am still nervous that you will not get as much dirty oil out at a change. Gravity is king...
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#1987333 - 08/16/10 07:34 AM Re: Thoughts on changing oil through the dipstick hole [Re: Spyder7]
AMRoberts Offline


Registered: 04/08/10
Posts: 44
Loc: Wake Forest, North Carolina, U...
Originally Posted By: Spyder7
Debating doing this on this short OCI after seeing an all-purpose "fluid transfer" pump at Walmart for $15...


Spyder, this Walmart pump is priced well below $15, but if this is what you are looking at, I can confirm two things from my use of the same pump:
  • The instructions say warm, but not hot oil. They really mean it. I couldn't get the pump to function against cold oil.
  • Even with warm oil, it is a lot of work to empty the sump given the volume that the pump lifts with each stroke.
I just upgraded to a Topsider, to let vacuum do the work, as others suggested.

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