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#3203762 - 12/02/13 10:11 AM Drops of Mobil 1 shooting down funnel like BB's
LoneRanger Offline

Registered: 07/02/07
Posts: 2105
Loc: Midwest
Once upon a time, I saw a video maybe on youtube. It showed a cool effect when pouring Mobil 1 into a funnel: Once the funnel is coated with Mobil 1, stopped pouring and let individual drops fall from the bottle onto the funnel and the drops would shoot down the surface on top of the layer oil coating the plastic funnel, like BB's.

Maybe any synthetic oil can probably put on this droplet show. I was reminded of it the other day as I was pouring Mobil 1 4T into my Ducati. Sure enough, when each bottle was depleted and dripping drops, the drops shot down the funnel like little fluid BB's.

Can't find the old video, no longer on Youtube.


'09 Subaru Forester .......... (Motorcraft Syn Blend 5W30)
'13 Ducati Multistrada 1200 (Spectro Platinum 15W50)

#3203767 - 12/02/13 10:16 AM Re: Drops of Mobil 1 shooting down funnel like BB's [Re: LoneRanger]
JHZR2 Offline

Registered: 12/14/02
Posts: 36846
Loc: New Jersey
Surface tension. You can do this with water droplets on a hotplate too. Spheres minimize surface energy.

#3203769 - 12/02/13 10:19 AM Re: Drops of Mobil 1 shooting down funnel like BB's [Re: JHZR2]
BISCUT Offline

Registered: 12/28/11
Posts: 1734
Loc: NewYorkistan
Way back in the day I remember Castrol GTX doing it in my funnel at every oil change.
2015 F150 Lariat M1 0-20 FU(2.6k)
2010 Armada/M1 5-30 P1(112k)
2007 Maxima M1 5-30 FU(108k)

#3203793 - 12/02/13 10:37 AM Re: Drops of Mobil 1 shooting down funnel like BB's [Re: LoneRanger]
Rand Offline

Registered: 08/20/03
Posts: 9465
Loc: Barberton,Ohio
the gear oil did this when I changed it last week.
pretty normal.
2015 Forester I-Premium 6MT

#3203817 - 12/02/13 11:04 AM Re: Drops of Mobil 1 shooting down funnel like BB's [Re: LoneRanger]
IndyIan Offline

Registered: 09/23/08
Posts: 6820
Loc: Ontario, Canada
Isn't low surface tension more desirable in a motor oil? So it coats and sticks to everything in the engine and remixes instantly?
I thought this was actually one of the advantages of synthetic oil, more cling to help on dry starts?
07 Focus ZXW, 5spd manual, 130km MM F1 5W20
06 CRV, 5 spd auto AWD, 230km

#3203860 - 12/02/13 11:59 AM Re: Drops of Mobil 1 shooting down funnel like BB's [Re: IndyIan]
Kira Offline

Registered: 08/19/10
Posts: 1891
Loc: Champlain/Hudson Valley
Hello, I've noticed this effect in every funnel during every oil change I've ever done. The coating of oil in the funnel stops the "new drop" of oil from hitting and coating that part of the funnel. The funnel is already coated.

The kinetic force of the "new drop" of oil isn't dispensed. The "new drop" if free to zoom down the funnel at whatever speed it it had when it hit initially.

I think it's called the "Speedy B-B of Oil in a Funnel Effect". Kira

#3203895 - 12/02/13 12:26 PM Re: Drops of Mobil 1 shooting down funnel like BB's [Re: LoneRanger]
440Magnum Offline

Registered: 02/01/09
Posts: 7423
Loc: Texas
It can happen with any liquid- I've seen it quite often when rinsing a car with a fine spray of deionized water (eg. from one of the old Mr Clean car washers with a built in rinse water filter).
'66 Dodge Polara & '69 Dodge Coronet R/T both 440/727
'08 Ram 1500 4.7/545RFE
'12 Challenger SRT8 392/6-speed
'99 Cherokee 4.0, '11 Grand Cherokee 3.6