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How often should I drain and fill with Mercon LV? #4685721
03/05/18 10:39 PM
03/05/18 10:39 PM
Joined: Jun 2011
Posts: 1,831
Crawfordville FL
SilverFusion2010 Offline OP
SilverFusion2010  Offline OP

Joined: Jun 2011
Posts: 1,831
Crawfordville FL
6 speed ford/GM designed 6F35. It has the updated valve body.

So it had a full fluid swap during the warranty valve body fix, approx 33k miles. I had a full fluid swap done at 120k and I did a drain and fill around 160k because I was worried that MaxLife atf wasn’t the right stuff. I know now that it’s fine. I have enough Mercon LV to do another drain and fill.

Thoughts on when I should do the next drain and fill? Ford claimed 150k for the original fill.

Transmission is shifting fine, no strange behavior noted.

Last edited by SilverFusion2010; 03/05/18 10:40 PM.

2010 Ford Fusion SE 3.0L V6, 181 miles M1 HM 10w-30
Re: How often should I drain and fill with Mercon LV? [Re: SilverFusion2010] #4685729
03/05/18 10:46 PM
03/05/18 10:46 PM
Joined: Dec 2016
Posts: 7,997
Waco, TX
Linctex Offline
Linctex  Offline

Joined: Dec 2016
Posts: 7,997
Waco, TX
Originally Posted By: SilverFusion2010

Thoughts on when I should do the next drain and fill? Ford claimed 150k for the original fill.


Maybe if driven nothing but freeway miles.

Any regular city driving or towing, I say change it at 50,000


"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."
Re: How often should I drain and fill with Mercon LV? [Re: Linctex] #4685736
03/05/18 10:52 PM
03/05/18 10:52 PM
Joined: Sep 2010
Posts: 8,174
Texas
4WD Offline
4WD  Offline

Joined: Sep 2010
Posts: 8,174
Texas
Originally Posted By: Linctex
Originally Posted By: SilverFusion2010

Thoughts on when I should do the next drain and fill? Ford claimed 150k for the original fill.


Maybe if driven nothing but freeway miles.

Any regular city driving or towing, I say change it at 50,000


On our Explorer 3.5L with the 6F55 ~ that 150k nonsense was in the OM. That’s a twisty motor pushing that trans …
Flip a few pages and find “severe” and it is 30k … So that 50k is pretty reasonable IMO …

Re: How often should I drain and fill with Mercon LV? [Re: SilverFusion2010] #4685749
03/05/18 11:00 PM
03/05/18 11:00 PM
Joined: Jan 2009
Posts: 14,126
Illinois
tig1 Offline
tig1  Offline

Joined: Jan 2009
Posts: 14,126
Illinois
In my 2017 Fusion every 30K. Mercon LV.


2007 Ford Fusion 239,000 miles
M1 0-20 EP
2017 Ford Fusion 65K
M1 0-20 EP
10,000 mile OCIs on both engines
M1 ATF and Valvoline LV
M1 10-30 in all OPE
MC filters

Re: How often should I drain and fill with Mercon LV? [Re: SilverFusion2010] #4685759
03/05/18 11:08 PM
03/05/18 11:08 PM
Joined: May 2015
Posts: 973
Missouri
gabriel9766 Offline
gabriel9766  Offline

Joined: May 2015
Posts: 973
Missouri
I've drained and fill my moms 2010 fusion twice in a lil over 15k ( 109K ) with maxlife atf.


2015 Malibu LT 2.5L PPPP 0w20 46.1K
2007 Escape XLT 3.0L 5Q STHM 5w30/1Q MC full syn 5W20 115K
2010 Fusion SE 2.5L MC 0w20 110K
2008 Escape XLT 2.3L MC 5w30 187K
2007 Fusion SE 2.3L- 173.5K STHM 0W20
Re: How often should I drain and fill with Mercon LV? [Re: SilverFusion2010] #4685776
03/05/18 11:29 PM
03/05/18 11:29 PM
Joined: Dec 2006
Posts: 1,023
midwest
JamesBond Offline
JamesBond  Offline

Joined: Dec 2006
Posts: 1,023
midwest
If it's easy to drain and fill yourself why not spend the $15-20 to do it every other oil change, every year, whatever.

Re: How often should I drain and fill with Mercon LV? [Re: SilverFusion2010] #4685808
03/06/18 12:23 AM
03/06/18 12:23 AM
Joined: Jun 2014
Posts: 2,918
Phoenix, Arizona - USA
SirTanon Online content
SirTanon  Online Content

Joined: Jun 2014
Posts: 2,918
Phoenix, Arizona - USA
I have a 2010 Fusion SE with the 6F35 transmission and the 2.5 engine. Just today the car rolled past 250,000 miles.. well, I should say, it HIT 250,000 miles..



My standard trans fluid regimen is roughly 25,000 - 30,000 miles. I did my most recent LV drain and fill at about 21,000 miles, but that was coincident with an oil change, and because I wanted to add some LubeGard Red in with it.

I have used 100% Valvoline MaxLife as my fluid for multiple drain&fills.. My latest was the last of my MaxLife (about 3 quarts) plus 1 quart Motorcraft Mercon LV and 15oz of Lubegard.

The car shifts very cleanly. There is no jerkiness, lag, or flaring. I drive the car roughly 110 miles round trip commute to work each day, 4 days a week.. and put about 500 miles per week on it overall. About 90% of my driving is highway, frequently at speeds at or exceeding 70MPH. Summer temps here reach 120+ degrees F.

... Hope this helps.



Originally Posted By: JamesBond
If it's easy to drain and fill yourself why not spend the $15-20 to do it every other oil change, every year, whatever.


It's SUPER easy to do the drain&fill on the 6F35 trans on the 2010 Fusion. There's a drain plug in the trans, right at the bottom. Every other oil change would be overkill, but every 25,000-30,000 miles is the ideal interval.


2010 Ford Fusion SE - 2.5 liter/6F35 Trans - 271,000mi
2014 Nissan Altima SL - 2.5 liter/CVT - 62,000mi
Re: How often should I drain and fill with Mercon LV? [Re: SilverFusion2010] #4685921
03/06/18 07:18 AM
03/06/18 07:18 AM
Joined: Aug 2017
Posts: 91
Mt. Vernon, NY
ssamaroo01 Offline
ssamaroo01  Offline

Joined: Aug 2017
Posts: 91
Mt. Vernon, NY
I have a 2015 Fusion with the 2.0L. I change mine every 15k, which is every other oil change for me. I know it is overkill but I have heard about so many early failures or poor shifts with the 6F35 on the second gen Fusion. I don't know what changed in the transmission between 2012 and 2013. I drive about 30k a year. My wife has a 2012 Escape with the same transmission. That one shifts very well, even better than mine although mine does shift better than most second gen Fusions I have driven. I do a drain and fill on hers every 3 years since she doesn't drive very much. It's easy to do like SirTanon said, but it's also pretty cheap. I change out about 4 quarts at a time which costs under $20. I would say that 30k intervals would work just fine.


2018 Explorer Platinum 3.5L Ecoboost 4k
2015 Fusion Titanium AWD 2.0L Ecoboost 118k
2012 Escape Limited 2.5L Duratec 44k
2000 E-250 4.2L 91k
MC FS W/ MC Filters
Re: How often should I drain and fill with Mercon LV? [Re: SilverFusion2010] #4686084
03/06/18 11:02 AM
03/06/18 11:02 AM
Joined: Dec 2002
Posts: 4,388
The Garden State
Whimsey Online content
Whimsey  Online Content

Joined: Dec 2002
Posts: 4,388
The Garden State
Our 2017 2.3 EcoBooost Explorer has the same 6F35 transmission. I did a drain and fill at 12,000 miles and will do another at ~25,000 miles. After that it'll be every ~25,000 miles. It's soooo easy to do a drain and fill and the Motorcraft Mercon LV can be had for less than $5.00/qt. $20 every 25,000 miles is a lot cheaper than a $4,000++ tranny failure at around 80,000-100,000 miles on factory ATF. Which is conveniently past Ford's 5 yr/60,000 mi power train warranty even though they say it's good for 150,000 miles. They are not going to pay for any failure past the 5 yr/60,000 mi pt warranty.

Whimsey

Re: How often should I drain and fill with Mercon LV? [Re: SilverFusion2010] #4686694
03/06/18 08:23 PM
03/06/18 08:23 PM
Joined: Mar 2008
Posts: 7,889
USA
slacktide_bitog Offline
slacktide_bitog  Offline

Joined: Mar 2008
Posts: 7,889
USA
Since you have a drain plug and dipstick tube, it it easy.

Maxlife is good stuff that will give you many miles of service with no problems. But if you are still afraid, the parts stores have a sale on Castrol Full Synthetic ATF a few times a year for $5/qt. It is licensed Mercon LV.

If your transmission is known to have issues, and changing the ATF is easy, you can even change it every year, even though 30k should probably be sufficient.

Re: How often should I drain and fill with Mercon LV? [Re: SilverFusion2010] #4688423
03/08/18 08:58 AM
03/08/18 08:58 AM
Joined: Dec 2013
Posts: 2,099
socal
barkingspider Offline
barkingspider  Offline

Joined: Dec 2013
Posts: 2,099
socal
Severe service I would change every 30k. Normal service I would go 50-60k


06 Cadillac Escalade Ext
17 Cadillac ATS (wife)
05 Toyota Camry (daughter)
11 GMC Canyon off-road (daily)
Re: How often should I drain and fill with Mercon LV? [Re: SilverFusion2010] #4688734
03/08/18 02:18 PM
03/08/18 02:18 PM
Joined: Jun 2002
Posts: 12,873
The Motor City
Kestas Online content
Global Moderator
Kestas  Online Content
Global Moderator

Joined: Jun 2002
Posts: 12,873
The Motor City
I recently did my '01 Mercury Sable after 40K on the fluid. The old stuff came out looking clean; it could have gone longer. This was the third complete fluid exchange for the vehicle.

Re: How often should I drain and fill with Mercon LV? [Re: Kestas] #4689502
03/09/18 11:41 AM
03/09/18 11:41 AM
Joined: Dec 2002
Posts: 4,388
The Garden State
Whimsey Online content
Whimsey  Online Content

Joined: Dec 2002
Posts: 4,388
The Garden State
Originally Posted By: Kestas
I recently did my '01 Mercury Sable after 40K on the fluid. The old stuff came out looking clean; it could have gone longer. This was the third complete fluid exchange for the vehicle.


I would think your 2001 Sable would use Mercon V not Mercon LV.

Whimsey

Re: How often should I drain and fill with Mercon LV? [Re: SilverFusion2010] #4689669
03/09/18 03:24 PM
03/09/18 03:24 PM
Joined: Jun 2002
Posts: 12,873
The Motor City
Kestas Online content
Global Moderator
Kestas  Online Content
Global Moderator

Joined: Jun 2002
Posts: 12,873
The Motor City
You're right - my mistake - I use Mercon V.

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