Topsides Oil extractor - Page 3 - PeachParts Mercedes-Benz Forum

vstech · #31 02-14-2019, 10:23 AM

Let me tell you... attaching directly to the dipstick tube is WAAAAAY faster extraction, let’s you use a larger suction hose, and it gets all the oil out of the pan.

dogguy · #32 02-14-2019, 10:34 AM

Quote:

Originally Posted by funola

Diagram cannot be accurate since it shows the end of the dipstick tube at middle of oil pan. In actuality, the dipstick tube end terminates into a small reservoir in the bottom of the oil pan, at a level lower than the drain bolt hole.

I appreciate your precision of explanation.

Quote:

Originally Posted by funola

That's why after extraction using the FSM method of vacuum extraction out the dipstick tube, not a drop of oil comes out of the drain bolt hole after removal for inspection.

Sounds German to me. And I'm into it! LOL.

funola · #33 02-14-2019, 10:57 AM

Quote:

Originally Posted by dogguy

I appreciate your precision of explanation.

Sounds German to me. And I'm into it! LOL.

+1

I don't know why some people cannot be convinced that the dipstick tube engine oil extraction on a OM617 works the best, and is the factory recommended method. They'd rather screw themselves by inserting a nylon tube in the dipstick tube instead. lol

It may not work on every engine. But you will never know if it works or not unless you try it, then verify by pulling the drain plug afterwards.

I know it also works on my 92 VW. It does not work on a Saturn, as I just found out, nothing came up the dipstick tube because it does not enter into the oil. A nylon tube in the dipstick tube would not go in all the way to the bottom because of a sharp bend in the dipstick tube where it attaches to the block/pan.

It is still possible if I want to use vacuum extraction on the Saturn, by pulling the dipstick tube (takes a few minutes by removing 1 bolt) and stick the biggest clear nylon tube that will fit and reach bottom. Of course I will pull the drain plug afterwards to verify that all the oil has been extracted.

But, but, but some people will say then you will not be able to be under the car inspecting things like you can when doing an oil change by gravity. My answer to that is I prefer to inspect the under side of the car at my convenience, not when the oil is draining/ flying all over the place into a catch pan, with the possibility of knocking it over & spilling oil all over the place.

funola · #34 02-14-2019, 11:11 AM

Here's a pic of a OM617 oil pan showing the drain bolt hole. The dipstick tube has to be terminated in the small triangular reservoir under the oil drain hole so that after vacuum extraction, not a drop comes out that hole.

dogguy · #35 02-14-2019, 11:18 AM

Quote:

Originally Posted by funola

Here's a pic of a OM617 oil pan showing the drain bolt hole. The dipstick tube has to be terminated in the small triangular reservoir under the oil drain hole so that after vacuum extraction, not a drop comes out that hole.

Now you're just making my day!

Bravo.

It is just this sort of attention to design excellence that makes me appreciate and enjoy my W123 all the more as each year passes.

sixto · #36 02-14-2019, 11:28 AM

I don’t know how accurate the diagram is but the drain plug bung and angle suggest a few mm of oil/sludge remains. You’d have to tip the 617 30* or so to clear the bung. The 603 drains out the side and IIRC doesn’t have a bung to get in the way of a cleaner drain. Any lift of the right side will help.

Unless you’re draining the oil cooler, I can’t imagine much of this matters.

Sixto
98 E320s sedan and wagon
02 C320 wagon

dogguy · #37 02-14-2019, 11:32 AM

Quote:

Originally Posted by sixto

Unless you’re draining the oil cooler, I can’t imagine much of this matters.

That did occur to me. A few drops in the ocean.

Grzpdlr · #38 02-14-2019, 02:10 PM

Pretty convincing:

https://www.youtube.com/watch?v=65MMnubY4DA

funola · #39 02-15-2019, 10:50 AM

Quote:

Originally Posted by Bigdaddybenz

.........................

I find with the topsides oil extractor that the larger hose collapses even when the oil is moderately warm. The collapsed hose makes it take a long time to extract the oil. I also take the oil filler cap off as to vent the crankcase while extracting.

Has anyone else experienced this and did you replace the original larger hose with a hose that has a thicker wall and won’t collapse?

Thanks fir any replies

Find a thin coil spring that fits snug inside the hose that's collapses. Problem solved!

funola · #40 02-15-2019, 11:05 AM

Quote:

Originally Posted by sixto

I don’t know how accurate the diagram is but the drain plug bung and angle suggest a few mm of oil/sludge remains. You’d have to tip the 617 30* or so to clear the bung. The 603 drains out the side and IIRC doesn’t have a bung to get in the way of a cleaner drain. Any lift of the right side will help.

Unless you’re draining the oil cooler, I can’t imagine much of this matters.

Sixto
98 E320s sedan and wagon
02 C320 wagon

I have reason to believe that with the vacuum extraction setup I have, the oil cooler is also extracted. My setup consist of a 5 gal Helium tank charged by a 12 V vacuum pump that can generate 29 in hg, with a valve. I let the vac build to its max while letting vac pump run, oil filler cap on, loosen the oil filter housing cap (to let air it), then immediately open the valve. The sump and oil filter housing is sucked dry in less than 30 seconds. I can easily verify the filter housing is dry by inspection.

The reason I believe the oil cooler was also sucked dry is because the system was still primed when I opened the vacuum valve. I wanted to inspect the oil cooler for oil afterwards but was unable to do it since the fittings on it was frozen and I didn't want to risk breaking it.

vstech · #41 02-15-2019, 12:56 PM

I doubt the cooler could be drained from the sump dipstick...

funola · #42 02-15-2019, 04:21 PM

Quote:

Originally Posted by vstech

I doubt the cooler could be drained from the sump dipstick...

I gave my explanation on why I think the oil cooler could be drained from the dipstick tube, i.e. the system was still primed with oil, meaning there was no air in the system.

What's your explanation as to why you think it will not?

sixto · #43 02-15-2019, 04:48 PM

I think it depends on how the oil cooler and thermostat are designed. If air gets into the dipstick tube before all the oil in the cooler is drawn, the extractor won’t draw more oil.

Does it drain the oil filter housing through the oil pump? If so, once the level in the pan is below the pickup that path is done.

Are pools of oil in the head and IP drawn to the extractor in your case?

Sixto
98 E320s sedan and wagon
02 C320 wagon

vstech · #44 02-15-2019, 04:49 PM

Was the oil filter still sealed?

I just dont see how the engine sump being drained via suction could pull oil out of the filter, and the cooler lines... it's a closed loop off the filter body...

funola · #45 02-15-2019, 05:02 PM

Quote:

Originally Posted by vstech

Was the oil filter still sealed?

I just dont see how the engine sump being drained via suction could pull oil out of the filter, and the cooler lines... it's a closed loop off the filter body...

The oil filter housing lid was opened to let air in, the oil filler cap was not removed (no air gets in). The only air inlet point is the oil filter housing. The oil filter housing was sucked dry.

edit: The oil cooler is connected to the filter housing via hoses. If the filter housing was sucked dry, wouldn't you think the oil cooler was also sucked dry?

Note: Dry means it is not full of oil, not that it is surgically free of oil.

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