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ATF foaming up #4783070
06/10/18 12:33 PM
06/10/18 12:33 PM
Joined: May 2017
Posts: 846
TX
parshisa Online content OP
parshisa  Online Content OP
Joined: May 2017
Posts: 846
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???

Re: ATF foaming up [Re: parshisa] #4783077
06/10/18 12:43 PM
06/10/18 12:43 PM
Joined: Jan 2008
Posts: 10,956
OH
SatinSilver Offline
SatinSilver  Offline
Joined: Jan 2008
Posts: 10,956
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

Re: ATF foaming up [Re: parshisa] #4783080
06/10/18 12:45 PM
06/10/18 12:45 PM
Joined: Nov 2012
Posts: 410
Ajax,Ontario, Canada
Pelican Offline
Pelican  Offline
Joined: Nov 2012
Posts: 410
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.

Re: ATF foaming up [Re: parshisa] #4783095
06/10/18 12:59 PM
06/10/18 12:59 PM
Joined: Dec 2003
Posts: 9,920
Florida, Cape Coral
Eddie Offline
Eddie  Offline
Joined: Dec 2003
Posts: 9,920
Florida, Cape Coral
Check it with the engine running and AT warm after driving. Owners manual is a good read. Ed

Last edited by Eddie; 06/10/18 01:00 PM.

CX5 Touring 2.5L :-)
Re: ATF foaming up [Re: Eddie] #4783097
06/10/18 01:05 PM
06/10/18 01:05 PM
Joined: May 2017
Posts: 846
TX
parshisa Online content OP
parshisa  Online Content OP
Joined: May 2017
Posts: 846
TX
Good one. But these transmissions are to be checked with engine off

Re: ATF foaming up [Re: parshisa] #4783101
06/10/18 01:13 PM
06/10/18 01:13 PM
Joined: Dec 2003
Posts: 9,920
Florida, Cape Coral
Eddie Offline
Eddie  Offline
Joined: Dec 2003
Posts: 9,920
Florida, Cape Coral
REALLY?


CX5 Touring 2.5L :-)
Re: ATF foaming up [Re: Eddie] #4783104
06/10/18 01:20 PM
06/10/18 01:20 PM
Joined: May 2017
Posts: 846
TX
parshisa Online content OP
parshisa  Online Content OP
Joined: May 2017
Posts: 846
TX
Really

Re: ATF foaming up [Re: parshisa] #4783132
06/10/18 02:11 PM
06/10/18 02:11 PM
Joined: Mar 2008
Posts: 7,318
USA
slacktide_bitog Offline
slacktide_bitog  Offline
Joined: Mar 2008
Posts: 7,318
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.

Re: ATF foaming up [Re: SatinSilver] #4783146
06/10/18 02:37 PM
06/10/18 02:37 PM
Joined: Aug 2004
Posts: 20,199
CA
The Critic Offline
The Critic  Offline
Joined: Aug 2004
Posts: 20,199
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 - 178k - Various 0W-20 (Brew)
2007 Honda Accord 2.4 - 133K - Mobil 1 EP HM 5W-30
Re: ATF foaming up [Re: Pelican] #4783165
06/10/18 02:59 PM
06/10/18 02:59 PM
Joined: May 2017
Posts: 846
TX
parshisa Online content OP
parshisa  Online Content OP
Joined: May 2017
Posts: 846
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

Re: ATF foaming up [Re: parshisa] #4783254
06/10/18 05:12 PM
06/10/18 05:12 PM
Joined: Nov 2006
Posts: 20,569
MA, Mittelfranken.de
Trav Offline
Trav  Offline
Joined: Nov 2006
Posts: 20,569
MA, Mittelfranken.de
Air in the system somewhere, possibly leak down when you drained it or incorrect fill level. Foaming = Air.


ASE L1, Master. Deutsch Meisterbrief.
Re: ATF foaming up [Re: Trav] #4783261
06/10/18 05:19 PM
06/10/18 05:19 PM
Joined: May 2017
Posts: 846
TX
parshisa Online content OP
parshisa  Online Content OP
Joined: May 2017
Posts: 846
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?

Re: ATF foaming up [Re: parshisa] #4783264
06/10/18 05:21 PM
06/10/18 05:21 PM
Joined: Nov 2006
Posts: 20,569
MA, Mittelfranken.de
Trav Offline
Trav  Offline
Joined: Nov 2006
Posts: 20,569
MA, Mittelfranken.de
No.


ASE L1, Master. Deutsch Meisterbrief.
Re: ATF foaming up [Re: Trav] #4783267
06/10/18 05:22 PM
06/10/18 05:22 PM
Joined: May 2017
Posts: 846
TX
parshisa Online content OP
parshisa  Online Content OP
Joined: May 2017
Posts: 846
TX
Any tips and tricks on how to avoid it in future?

Re: ATF foaming up [Re: parshisa] #4783270
06/10/18 05:25 PM
06/10/18 05:25 PM
Joined: Nov 2006
Posts: 20,569
MA, Mittelfranken.de
Trav Offline
Trav  Offline
Joined: Nov 2006
Posts: 20,569
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.


ASE L1, Master. Deutsch Meisterbrief.
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