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#1476176 - 05/25/09 11:24 AM Motorcraft gold coolent
millerbl00 Offline

Registered: 02/11/08
Posts: 878
Loc: Louisiana
I am trying to troubleshoot a problem in a 2003 F150. It uses motorcraft gold coolent. Does anyone know how much POTASSIUM and sodium it contains?


#1476191 - 05/25/09 11:46 AM Re: Motorcraft gold coolent [Re: millerbl00]
peterdaniel Offline

Registered: 07/22/08
Posts: 275
Loc: Californ I/A
Why? Is it having cardiac problems?

#1476556 - 05/25/09 09:05 PM Re: Motorcraft gold coolent [Re: peterdaniel]

Registered: 04/13/09
Posts: 3735
Loc: Miami-Dade County
I am sorry that I can't help you with your question but since you brought up Motorcraft Gold Coolant I was told by my Ford dealer to change it out at 60K miles not the 100K miles that Ford recommends...Since I plan on keeping my Crown Vic to 300K miles it sounds like a good idea...Especially in this jungle heat and traffic.

The green stuff on my older cars I used to dump out at 30K miles.
05 Ford Crown Vic
5W20 Motorcraft Full Synthetic
Bosh D3410 Filter

07 Merc Grand Marquis
5W20 Motorcraft Full Synthetic
Motorcraft Filter.

#1476776 - 05/26/09 07:07 AM Re: Motorcraft gold coolent [Re: CROWNVIC4LIFE]
millerbl00 Offline

Registered: 02/11/08
Posts: 878
Loc: Louisiana
I also change around 60K. Cheap insurance.

#1521972 - 07/05/09 07:05 PM Re: Motorcraft gold coolent [Re: millerbl00]
pzev Offline

Registered: 11/30/05
Posts: 601
Loc: arctic
The dealer was most likely looking to empty your pockets and not protecting your car.

That said, I do quick drain and refils on my Ford every 30k or so using like posted above, its easy and cheap.

#1542091 - 07/23/09 08:37 PM Re: Motorcraft gold coolent [Re: pzev]
artificialist Offline

Registered: 09/23/07
Posts: 7616
Loc: Florida
The G-05 in my mom's Jeep Grand Cherokee looked okay when it was 3 years old and had 55,000 miles on it, but after I drained and filled the system, the car ran much better, and the coolant reservoir was cleaner.

The Ford dealer was not trying to be dishonest.

Ford Gold is just another G-05.
2010 Lancer Ralliart Sportback

#1542311 - 07/24/09 12:53 AM Re: Motorcraft gold coolent [Re: artificialist]
pzev Offline

Registered: 11/30/05
Posts: 601
Loc: arctic
I will say this about G-05...I get scale buildup in my overflow bottle. Its bad enough these plastic bottles turn yellow in no time, but this scale buildup is really ugly. I spent a couple days trying to clean it out, but the baffles kept getting in the way.
crushed ice and salt, no go...I even tried sand, and that worked pretty well but was a pain to rinse out.

So, I said skrew it and painted the darn thing flat black....looks great lol. Should have done that to start with and I wouldn't have cared about the scale.
I am pretty sure this is caused by the silicate content in G-05. That said, I haven't looked at enough Foci to see if its a widespread problem, or a result of me switching the motorcraft coolant out at 30k, and refilling with Zerex brand G-05. Perhaps the two didn't mix well...I don't know (they should have).

#1680557 - 11/22/09 04:17 AM Re: Motorcraft gold coolent [Re: pzev]
cos Offline

Registered: 11/21/04
Posts: 1149
Loc: Metro Detroit
My '06 Fusion's overflow bottle looks fine. I did three drain 'n fills with Xerex G-05 this spring to replace the three yr old factory fill (including burping the system each time via the bleed valve).
'06 Ford Fusion 2.3/manual
Amsoil MTF/MTG

#2127166 - 01/04/11 03:44 PM Re: Motorcraft gold coolent [Re: cos]
Beachboy Offline

Registered: 05/25/05
Posts: 109
Loc: Northeast Kansas
I was surprised to see that my new '11 Mercury Milan calls for the first coolant change at 105,000 miles, then every 45,000 miles thereafter. Also, I can find NO recommendation to ever change the fuel filter or automatic transaxle fluid. I'm currently changing the oil at 5,000 mile intervals, but the next oil change which is at 15,000 miles, I plan to switch to the 7,500 mile intervals the factory recommends. That would mesh better with tire rotation recommendations.

I agree that the dealer typically recommends increased servicing primarily to line their pockets. My dealer is still recommending 3,000 mile OCI's. Sorry folks, that's once a month for me, and its not gonna happen. On my previous car, the dealer "strongly recommended" fuel filter changes every 15,000 miles, along with new wiper blades, and some miracle fuel system cleaner dumped in the gas tank.
2011 Mercury Milan
1997 Ford Explorer Sport

#2127608 - 01/04/11 09:04 PM Re: Motorcraft gold coolent [Re: millerbl00]
mechanicx Offline

Registered: 10/23/09
Posts: 8576
Loc: Ohio
I'm not sure that Motorcraft Gold/G-05 uses potassium but it does conain sodium and 3,000 ppm sodium would be a ball park figure for concentrate. How would knowing the potassium and sodium level diagnosis your coolant issue?

#2606277 - 04/22/12 03:29 AM Re: Motorcraft gold coolent [Re: millerbl00]
Gene K Offline

Registered: 01/25/03
Posts: 3161
Loc: Decatur AL USA
G05 is Potassium free (added for future reference).

Edited by Gene K (04/22/12 03:30 AM)

#2606389 - 04/22/12 09:18 AM Re: Motorcraft gold coolent [Re: millerbl00]
boxcartommie22 Offline

Registered: 01/03/03
Posts: 3050
Loc: moutain country
get the [censored] g05 stuff out and put in final charge..go5 leaves alot of deposits one of the reasons ford not using it anymore.
2001 Lincoln Conti,RL,K&N,SS Filter,Lubegard,Archoil
2007 Grand Marquis,RL,K&N,SS Filter,Lubegard,Archoil
2010 Raptor,RL,SS Filter,Lubegard,Archoil

#2615596 - 05/02/12 08:08 AM Re: Motorcraft gold coolent [Re: boxcartommie22]
Falcon_LS Offline

Registered: 10/03/08
Posts: 3712
Loc: Kuwait
Originally Posted By: boxcartommie22
get the [censored] g05 stuff out and put in final charge..go5 leaves alot of deposits one of the reasons ford not using it anymore.

What do you use in your vehicles?
99 Explorer: M1 0W40/FL1A
00 Pajero: M1 0W40/26300-35503
01 Marquis: M1 ESP 5W30/FL820S
03 Expedition: M1 5W-50/FL820S
05 Envoy: M1 ESP 5W30/M1-206

#2620783 - 05/07/12 10:17 PM Re: Motorcraft gold coolent [Re: millerbl00]
Colt45ws Offline

Registered: 08/15/06
Posts: 7804
Loc: Central Washington
I dont have any deposits with G-05..?
2004 Ford Crown Vic LX, 85k "Tank"
2002 Ford Crown Vic PI, 170k "Highwayman" (Ex-Kootenai County, ID Unit #42)

#2622757 - 05/10/12 12:19 AM Re: Motorcraft gold coolent [Re: millerbl00]
dave1251 Offline

Registered: 07/15/05
Posts: 7690
Loc: Maricopa, AZ
I have crusty goo on my overflow tank on my F150 it is factory fill. Now on my wife's Focus no such problem.
make the inside of your engine oil cap white.
don't use.

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