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Starting from scratch: 1965 Mustang, what coolant? #4811190
07/11/18 09:56 AM
07/11/18 09:56 AM
Joined: Nov 2014
Posts: 13
Maine, USA
Minorgroove Offline OP
Minorgroove  Offline OP

Joined: Nov 2014
Posts: 13
Maine, USA
I am rebuilding my old Mustang with a new engine (Ford 5.0/302 cast iron roller cam block with aluminum AFR cylinder heads) and a new aluminum radiator and a new heater core and hoses. Given all of the technological changes to coolant chemistry through the years and this decidedly non-stock build, what kind of coolant should I use when building from scratch? It would be convenient to choose a chemistry that is available through the aftermarket such as Prestone or Zerex, but which long-life formula would be best - HOAT, OAT, P-HOAT, etc?

My 2016 Ford F150 uses Motorcraft Specialty Orange which seems to be somewhat similar to the GM DexCool, and my wife's Mazda CX-5 uses a long-life Asian FL-22 formula. I don't necessarily need to match with either vehicle, but I would like to choose the best long-life formula for my car and am open to any suggestions. If you were starting from scratch what would you use?

Thanks,
Greg

Re: Starting from scratch: 1965 Mustang, what coolant? [Re: Minorgroove] #4811194
07/11/18 10:04 AM
07/11/18 10:04 AM
Joined: Nov 2004
Posts: 1,902
SD
zrxkawboy Offline
zrxkawboy  Offline

Joined: Nov 2004
Posts: 1,902
SD
I'd use G-05 (HOAT).


"Think of all the Ford owners who will someday want an automobile." John Dodge

Re: Starting from scratch: 1965 Mustang, what coolant? [Re: Minorgroove] #4811195
07/11/18 10:04 AM
07/11/18 10:04 AM
Joined: Dec 2011
Posts: 5,473
North Carolina
rooflessVW Offline
rooflessVW  Offline

Joined: Dec 2011
Posts: 5,473
North Carolina
Zerex G05


"Zed's dead baby, Zed's dead."
Re: Starting from scratch: 1965 Mustang, what coolant? [Re: Minorgroove] #4811200
07/11/18 10:10 AM
07/11/18 10:10 AM
Joined: Oct 2004
Posts: 3,238
Midwest, Illinois
beanoil Offline
beanoil  Offline

Joined: Oct 2004
Posts: 3,238
Midwest, Illinois
G-05.

Last edited by beanoil; 07/11/18 10:11 AM.

beanoil: Tough under heat, real dirty afterwards.
Re: Starting from scratch: 1965 Mustang, what coolant? [Re: Minorgroove] #4811201
07/11/18 10:12 AM
07/11/18 10:12 AM
Joined: Jun 2002
Posts: 12,794
The Motor City
Kestas Offline
Kestas  Offline

Joined: Jun 2002
Posts: 12,794
The Motor City
Zerex G05.

There are no soldered components because you switched to an aluminum radiator, so the old school green antifreeze is out.

You don't know how Dex-cool would affect the gaskets in your setup, so that is out.

Re: Starting from scratch: 1965 Mustang, what coolant? [Re: Minorgroove] #4811203
07/11/18 10:14 AM
07/11/18 10:14 AM
Joined: Apr 2017
Posts: 1,695
San Rafael, CA
dogememe Offline
dogememe  Offline

Joined: Apr 2017
Posts: 1,695
San Rafael, CA
Another vote for G05


2010 Ford Escape 2.5 ~94K Miles: Royal Purple 5W-30
2008 Ford Crown Vic P71 4.6 ~166K Miles: AMSOIL SS 0W-30
1995 Chevy Silverado 5.7 ~277K Miles: Delo 10W-30
Re: Starting from scratch: 1965 Mustang, what coolant? [Re: Minorgroove] #4811208
07/11/18 10:20 AM
07/11/18 10:20 AM
Joined: May 2009
Posts: 12,342
N.H, U.S.A.
ARCOgraphite Offline
ARCOgraphite  Offline

Joined: May 2009
Posts: 12,342
N.H, U.S.A.
If you are racing, NO E-GLYCOL. Maybe water with a wetter and 20% PG.

Other wise I deferr


2019 VW Jetta S,6M OCI#0 1136mi-Castrol Edge Prof? VW508+OE Filter; '17 Subaru Crosstrek CVT OC#6 43467mi-Valvoline Adv 0w20 + SOA Filter
Re: Starting from scratch: 1965 Mustang, what coolant? [Re: Minorgroove] #4811215
07/11/18 10:29 AM
07/11/18 10:29 AM
Joined: Jun 2014
Posts: 2,875
Phoenix, Arizona - USA
SirTanon Offline
SirTanon  Offline

Joined: Jun 2014
Posts: 2,875
Phoenix, Arizona - USA
Wow. I've never seen such a unilateral response on any thread here on BITOG previously.. this is amazing.

That said, I agree that G05 is a perfect choice in this application. Cheap, easy to find, and top notch.


2010 Ford Fusion SE - 2.5 liter/6F35 Trans - 268,000mi
2014 Nissan Altima SL - 2.5 liter/CVT - 61,000mi
Re: Starting from scratch: 1965 Mustang, what coolant? [Re: Minorgroove] #4811225
07/11/18 10:43 AM
07/11/18 10:43 AM
Joined: Nov 2014
Posts: 13
Maine, USA
Minorgroove Offline OP
Minorgroove  Offline OP

Joined: Nov 2014
Posts: 13
Maine, USA
I want to thank everyone for the fast and nearly unanimous opinions! Thank you so much for your insights.

Best,
Greg

Re: Starting from scratch: 1965 Mustang, what coolant? [Re: SirTanon] #4811247
07/11/18 11:05 AM
07/11/18 11:05 AM
Joined: Jun 2002
Posts: 12,794
The Motor City
Kestas Offline
Kestas  Offline

Joined: Jun 2002
Posts: 12,794
The Motor City
Originally Posted By: SirTanon
Wow. I've never seen such a unilateral response on any thread here on BITOG previously.. this is amazing.

Probably a BITOG first.

Re: Starting from scratch: 1965 Mustang, what coolant? [Re: Minorgroove] #4811258
07/11/18 11:15 AM
07/11/18 11:15 AM
Joined: Jul 2009
Posts: 432
Seattle
Superflop Offline
Superflop  Offline

Joined: Jul 2009
Posts: 432
Seattle
Lol so funny i was coming in to say G-05 also..


2002 saab 9-5 2.3t wagon
2014 dodge grand caravan
Re: Starting from scratch: 1965 Mustang, what coolant? [Re: Minorgroove] #4811292
07/11/18 11:43 AM
07/11/18 11:43 AM
Joined: Dec 2017
Posts: 3,690
SE British Columbia, Canada
Snagglefoot Offline
Snagglefoot  Offline

Joined: Dec 2017
Posts: 3,690
SE British Columbia, Canada
Simple. Prestone with Core-Guard..





Last edited by Snagglefoot; 07/11/18 11:44 AM.

If you want the job done right......do it yourself.
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