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Starting from scratch: 1965 Mustang, what coolant? #4811190
07/11/18 10:56 AM
07/11/18 10:56 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 11:04 AM
07/11/18 11:04 AM
Joined: Nov 2004
Posts: 1,803
SD
zrxkawboy Offline
zrxkawboy  Offline
Joined: Nov 2004
Posts: 1,803
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 11:04 AM
07/11/18 11:04 AM
Joined: Dec 2011
Posts: 4,761
North Carolina
rooflessVW Online content
rooflessVW  Online Content
Joined: Dec 2011
Posts: 4,761
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 11:10 AM
07/11/18 11:10 AM
Joined: Oct 2004
Posts: 3,079
Midwest, Illinois
beanoil Offline
beanoil  Offline
Joined: Oct 2004
Posts: 3,079
Midwest, Illinois
G-05.

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

beanoil: Tough under heat, real dirty afterwards.
Re: Starting from scratch: 1965 Mustang, what coolant? [Re: Minorgroove] #4811201
07/11/18 11:12 AM
07/11/18 11:12 AM
Joined: Jun 2002
Posts: 12,524
The Motor City
Kestas Offline
Kestas  Offline
Joined: Jun 2002
Posts: 12,524
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 11:14 AM
07/11/18 11:14 AM
Joined: Apr 2017
Posts: 977
SF BAY AREA, CA
dogememe Offline
dogememe  Offline
Joined: Apr 2017
Posts: 977
SF BAY AREA, CA
Another vote for G05


2007 Crown Vic P71 4.6 ~127K Miles, RP HPS 5W-30, RP 20-820.
2010 Escape FWD 2.5 ~90K Miles, Castrol Edge EP 5W-30, Wix 51348.
Re: Starting from scratch: 1965 Mustang, what coolant? [Re: Minorgroove] #4811208
07/11/18 11:20 AM
07/11/18 11:20 AM
Joined: May 2009
Posts: 12,199
N.H, U.S.A.
ARCOgraphite Offline
ARCOgraphite  Offline
Joined: May 2009
Posts: 12,199
N.H, U.S.A.
If you are racing, NO E-GLYCOL. Maybe water with a wetter and 20% PG.

Other wise I deferr


2014 Nissan Rogue S CVT, OC#9 41392mi-QSUD10W30 + M110A CHAMP Filter; 2017 Subaru Crosstrek CVT OC#2 ?? mi-SOA/Idemitsu 0w20 + SOA Filter
Re: Starting from scratch: 1965 Mustang, what coolant? [Re: Minorgroove] #4811215
07/11/18 11:29 AM
07/11/18 11:29 AM
Joined: Jun 2014
Posts: 2,475
Phoenix, Arizona - USA
SirTanon Offline
SirTanon  Offline
Joined: Jun 2014
Posts: 2,475
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 - 262,000mi
2014 Nissan Altima SL - 2.5 liter/CVT - 57,000mi
Re: Starting from scratch: 1965 Mustang, what coolant? [Re: Minorgroove] #4811225
07/11/18 11:43 AM
07/11/18 11:43 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 12:05 PM
07/11/18 12:05 PM
Joined: Jun 2002
Posts: 12,524
The Motor City
Kestas Offline
Kestas  Offline
Joined: Jun 2002
Posts: 12,524
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 12:15 PM
07/11/18 12:15 PM
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 12:43 PM
07/11/18 12:43 PM
Joined: Dec 2017
Posts: 2,351
SE British Columbia, Canada
Snagglefoot Offline
Snagglefoot  Offline
Joined: Dec 2017
Posts: 2,351
SE British Columbia, Canada
Simple. Prestone with Core-Guard..





Last edited by Snagglefoot; 07/11/18 12:44 PM.

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

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