Do Fumoto Drain Plugs remove all oil?

[viscositosis.rex]

VW put a snorkel on their dsg fluid drain plug. It's complicated.

[cjny]

Did my first oil change with Fumoto valve today. Sweet!

I was in no hurry and let it drip for a long time - probably 90 minutes. It was surprising how long it took before dripping stopped, even though the oil was quite hot when the valve was opened. Then I removed the valve to see how much more oil dripped out. Answer: slightly more than a tablespoon.

If that much old oil left in the pan is sufficient to keep you from using the Fumoto valve then you should let your car drain for the better part of an hour after you remove the drain plug, otherwise you are doing no better.

[radroach]

Thanks @cjny I was wondering how much would stay in the pan from the fumoto install.

I'd guess there's plenty more oil that stays up throughout the rest of the engine after you drain oil, or at least from my observation because apparently oil capacity is 5.7L, and I'm plenty overfull after about 5.4L on a regular oil change using the normal drain plug.

[cjny]

One of the advantages of the Fumoto valve I've never seen mentioned is that you can easily drain the oil when at full operating temperature. Hot oil drains more quickly and thoroughly, more than making up for the tiny bit that the valve might trap in the pan.

This might not seem like much to those who have access to a lift, but if you crawl under the car to drain then the Fumoto seems awfully nice. Not even a drop touches your hands or tools.

[reeves]

Originally Posted by cjny

Did my first oil change with Fumoto valve today. Sweet!

I was in no hurry and let it drip for a long time - probably 90 minutes. It was surprising how long it took before dripping stopped, even though the oil was quite hot when the valve was opened. Then I removed the valve to see how much more oil dripped out. Answer: slightly more than a tablespoon.

If that much old oil left in the pan is sufficient to keep you from using the Fumoto valve then you should let your car drain for the better part of an hour after you remove the drain plug, otherwise you are doing no better.

OP, if you're still worried about a ~tablespoon of old oil left in the engine, just do what I do:

1) Change your oil more often (every 2.5K-3.5K miles)

2a) Quickly jack up & down the passenger side of your car to shake every bit of oil out of the engine, then 2b) Push the car side-to-side & up-down (yes, while its jacked up).. you'll see a tiny bit more drip out

[humfrz]

Originally Posted by reeves

OP, if you're still worried about a ~tablespoon of old oil left in the engine, just do what I do:

1) Change your oil more often (every 2.5K-3.5K miles)

2a) Quickly jack up & down the passenger side of your car to shake every bit of oil out of the engine, then 2b) Push the car side-to-side & up-down (yes, while its jacked up).. you'll see a tiny bit more drip out

Well, yes, of course, after the car slips off the jack, and you are trying to get the jack out from under the car to jack it back up, naturally more oil will drain out .......

Today is pick on ol @reeves day .......


humfrz

[reeves]

I was being a little sarcastic on the 2nd suggestion, but he gets the idea lol

[mhughett]

Originally Posted by mav1178

So you can sleep better at night, the stock Forester plug vs Fumoto:



Honestly, just don't think about it. You're better off monitoring your oil levels regularly than worrying about every last drop.

-alex

This cannot be the fumoto valve replacement for this drain plug. The diameter of the fumoto threads is much larger than that of the standard drain plug.

[mav1178]

Originally Posted by mhughett

This cannot be the fumoto valve replacement for this drain plug. The diameter of the fumoto threads is much larger than that of the standard drain plug.

I never said it was.

It was meant to illustrate the length of the threaded portion that goes into the pan. See the exposed thread on the stock one vs the Fumoto? Its's basically like 2mm of extra thread into the pan when you run the Fumoto.

-alex

[reeves]

If anyone's interested, this is the correct one (F-108) for our cars: https://www.amazon.com/gp/product/B003VCCUJI/

See there, @humfrz, I can be non-sarcastic and helpful once in a while..

[humfrz]

Originally Posted by reeves

If anyone's interested, this is the correct one (F-108) for our cars: https://www.amazon.com/gp/product/B003VCCUJI/

See there, @humfrz, I can be non-sarcastic and helpful once in a while..

OK, you're off the hook ....... for today ......


humfrz

[Ultramaroon]

To everyone who sweats an ounce or two of old stuff, consider how much stays behind in an oil cooler.

No worries.

[reeves]

No, seriously.. shake the car while it's jacked up from the passenger side. You can see the oil dripping faster afterwards.. it works!

I mean, not speaking from experience.. but I saw a friend do it once. He had the exact same mileage and mods as me too.