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#4783070 - 06/10/18 01:33 PM ATF foaming up
parshisa Offline


Registered: 05/21/17
Posts: 634
Loc: TX
So i did drain and fill on my pilot in singature yesterday, drain 3.5qts and put the same amount back in. Drive the car, got it nice and hot, checked the level as per manual - right on the middle. This morning pulled the dipstick and the level was twice as it should be(?!). I went ahead and started the car, ran through the gears, shut it off and pulled the dipstick - foamy ATF on it ([censored]). Level read between the dots. Foaming was gone in a matter if seconds. Ok, drove the car for a few miles, deives just fine, checked the level again - slightly above min as it was yesterday and no singa of foaming.

My question is - what the heck was that???
_________________________
2016 Honda Pilot 3.5V6 PP 0W20
2017 Honda Civic 1.5T Amsoil SS 5W30

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#4783077 - 06/10/18 01:43 PM Re: ATF foaming up [Re: parshisa]
SatinSilver Offline


Registered: 01/24/08
Posts: 10485
Loc: OH
You should be checking the level with the engine running I believe. Should say so in the owners manual.

https://www.carcarekiosk.com/video/2016_Honda_Pilot_EX_3.5L_V6/transmission_fluid/check_fluid_level

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#4783080 - 06/10/18 01:45 PM Re: ATF foaming up [Re: parshisa]
Pelican Offline


Registered: 11/28/12
Posts: 203
Loc: Ajax,Ontario, Canada
Originally Posted By: parshisa
So i did drain and fill on my pilot in singature yesterday, drain 3.5qts and put the same amount back in. Drive the car, got it nice and hot, checked the level as per manual - right on the middle. This morning pulled the dipstick and the level was twice as it should be(?!). I went ahead and started the car, ran through the gears, shut it off and pulled the dipstick - foamy ATF on it ([censored]). Level read between the dots. Foaming was gone in a matter if seconds. Ok, drove the car for a few miles, deives just fine, checked the level again - slightly above min as it was yesterday and no singa of foaming.
My question is - what the heck was that???


Probably the ATF coming out was warmer than the one going in and you may have overfilled it.

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#4783095 - 06/10/18 01:59 PM Re: ATF foaming up [Re: parshisa]
Eddie Offline


Registered: 12/07/03
Posts: 9732
Loc: Florida, Cape Coral
Check it with the engine running and AT warm after driving. Owners manual is a good read. Ed


Edited by Eddie (06/10/18 02:00 PM)
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#4783097 - 06/10/18 02:05 PM Re: ATF foaming up [Re: Eddie]
parshisa Offline


Registered: 05/21/17
Posts: 634
Loc: TX
Good one. But these transmissions are to be checked with engine off
_________________________
2016 Honda Pilot 3.5V6 PP 0W20
2017 Honda Civic 1.5T Amsoil SS 5W30

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#4783101 - 06/10/18 02:13 PM Re: ATF foaming up [Re: parshisa]
Eddie Offline


Registered: 12/07/03
Posts: 9732
Loc: Florida, Cape Coral
REALLY?
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#4783104 - 06/10/18 02:20 PM Re: ATF foaming up [Re: Eddie]
parshisa Offline


Registered: 05/21/17
Posts: 634
Loc: TX
Really
_________________________
2016 Honda Pilot 3.5V6 PP 0W20
2017 Honda Civic 1.5T Amsoil SS 5W30

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#4783132 - 06/10/18 03:11 PM Re: ATF foaming up [Re: parshisa]
slacktide_bitog Offline


Registered: 03/20/08
Posts: 6585
Loc: USA
Unlike most other cars, Honda automatic transmissions are checked with the car OFF

Honda uses a different design than other automatics out there. For one, they don't use planetary gears, but rather, something more like an automated manual, with gears like a manual but engaged by hydraulics.

Only recently has Honda begun using outside transmissions like ZF.

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#4783146 - 06/10/18 03:37 PM Re: ATF foaming up [Re: SatinSilver]
The Critic Offline


Registered: 08/30/04
Posts: 19929
Loc: CA
Originally Posted By: SatinSilver
You should be checking the level with the engine running I believe. Should say so in the owners manual.

https://www.carcarekiosk.com/video/2016_Honda_Pilot_EX_3.5L_V6/transmission_fluid/check_fluid_level


You may want to try researching a bit harder, and using more reputable sources to provide information to others.
_________________________
2011 Toyota Prius - 170k - ServicePro Dexos 0W-20
2007 Honda Accord 2.4 - 129K - Idemitsu 5W-20

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#4783165 - 06/10/18 03:59 PM Re: ATF foaming up [Re: Pelican]
parshisa Offline


Registered: 05/21/17
Posts: 634
Loc: TX
Fluid out was slightly warmer than fluid in. And amount if the fluid out and in are very close to te book number. So it wasnít overfilled for sure
_________________________
2016 Honda Pilot 3.5V6 PP 0W20
2017 Honda Civic 1.5T Amsoil SS 5W30

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#4783254 - 06/10/18 06:12 PM Re: ATF foaming up [Re: parshisa]
Trav Offline


Registered: 11/20/06
Posts: 19649
Loc: MA, Mittelfranken.de
Air in the system somewhere, possibly leak down when you drained it or incorrect fill level. Foaming = Air.
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#4783261 - 06/10/18 06:19 PM Re: ATF foaming up [Re: Trav]
parshisa Offline


Registered: 05/21/17
Posts: 634
Loc: TX
Iíve driven it for a good 15-20miles and checked again - level is spot on. And it was yesterday wheneve i changed it and drove for a couplenpf miles. Just weird and makes no sense. Any possible harm to the trans with that foaming event?
_________________________
2016 Honda Pilot 3.5V6 PP 0W20
2017 Honda Civic 1.5T Amsoil SS 5W30

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#4783264 - 06/10/18 06:21 PM Re: ATF foaming up [Re: parshisa]
Trav Offline


Registered: 11/20/06
Posts: 19649
Loc: MA, Mittelfranken.de
No.
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#4783267 - 06/10/18 06:22 PM Re: ATF foaming up [Re: Trav]
parshisa Offline


Registered: 05/21/17
Posts: 634
Loc: TX
Any tips and tricks on how to avoid it in future?
_________________________
2016 Honda Pilot 3.5V6 PP 0W20
2017 Honda Civic 1.5T Amsoil SS 5W30

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#4783270 - 06/10/18 06:25 PM Re: ATF foaming up [Re: parshisa]
Trav Offline


Registered: 11/20/06
Posts: 19649
Loc: MA, Mittelfranken.de
If its leaking down because the sump is empty when you drain it then probably not, the air got pushed out in a few seconds along with some fluid so it was not dry. Air goes to the top, the pickup was still drawing liquid.
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