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Cast iron block / aluminium head, what do you use?
#4812384
07/12/18 02:35 PM
07/12/18 02:35 PM
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Joined: Oct 2015
Posts: 2,885 Balearic Islands , Spain
FordCapriDriver
OP
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OP
Joined: Oct 2015
Posts: 2,885
Balearic Islands , Spain
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Today my Escort had its timing belt, water pump and belt tensioner changed, i had been using an OAT Pink colour 30% premix coolant until now as it's what most of the people seem to be using on Escort forums. They refilled it instead with a regular green IAT 30% premix coolant, considering dumping it all out and refilling with what i was using until now, what do you all who have engines with cast iron blocks and aluminium heads use? IAT or OAT, green or red/pink? Is one or the other inherently better for an engine with an aluminium head?
1975 Ford Capri II Ghia 3000 V6, - Shell Helix HX3 20W-50 w/ 20% Rimula R4X 15W-40 HDEO. 1988 Ford Escort Mk4 Xr3i Cabrio, - Shell Rimula R4X 15W-40, w/ 30% Helix 3 20W-50. Both on G40 Si-OAT coolant.
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Re: Cast iron block / aluminium head, what do you use?
[Re: FordCapriDriver]
#4812396
07/12/18 02:46 PM
07/12/18 02:46 PM
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Joined: Dec 2016
Posts: 218 Wisconsin
emmett442
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Joined: Dec 2016
Posts: 218
Wisconsin
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I use OAT on EVERYTHING. Iron/Iron, Iron/Alum, Alum/Iron, Alum/Alum...doesn't matter. It all gets the same OAT.
No problems to report after 15 years.
2011 Ford Crown Victoria LX 4.6L V8 auto 2009 Chevrolet Malibu LT 2.4L I4 auto 1974 Dodge D200 360 V8 4 speed manual
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Re: Cast iron block / aluminium head, what do you use?
[Re: FordCapriDriver]
#4812399
07/12/18 02:48 PM
07/12/18 02:48 PM
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Joined: Jun 2009
Posts: 3,807 Chicago, IL
tomcat27
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Joined: Jun 2009
Posts: 3,807
Chicago, IL
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Green was good when everything was iron. I prefer hoat or oat on aluminum.
2019 Cherokee, 2018 Jetta, 2014 Sentra, 1995 Escort, 1970 Cougar, 2013 XT250, 2010 Vstar, 2014 CTX1300
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Re: Cast iron block / aluminium head, what do you use?
[Re: FordCapriDriver]
#4812408
07/12/18 02:54 PM
07/12/18 02:54 PM
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Joined: Mar 2013
Posts: 5,223 The Midwest
skyactiv
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Joined: Mar 2013
Posts: 5,223
The Midwest
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Many VW engines still come with an iron block and an aluminum head like both cars in my signature. Using G40 coolant would be my choice.
Wife: 15' Audi A4 quattro 6 speed manual Me: 13' VW GTI 3 door 6 speed manual Wanted: 2019 Ford Ranger
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Re: Cast iron block / aluminium head, what do you use?
[Re: FordCapriDriver]
#4812511
07/12/18 05:07 PM
07/12/18 05:07 PM
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Joined: May 2013
Posts: 2,169 Saskatchewan, Canada
Johnny2Bad
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Joined: May 2013
Posts: 2,169
Saskatchewan, Canada
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I use what the OEM says to use. I don't trust "Universal" coolants. If I have to, I'll buy it from the dealer.
There was a video posted on the subject a while back. Maybe use the search facility (should do so anytime you want to create a new post anyway; 90% of the questions here are already answered).
'57 FL Straight 50 wt '90 Miata 1.8L w/Rotrex Supercharger [Mobil1 0W-40] '96 Ram 1500 [3.7L Mobil1 0W-20 / 1L 15W-50] '01 PT Cruiser [Mobil1 0W-40]
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Re: Cast iron block / aluminium head, what do you use?
[Re: FordCapriDriver]
#4812871
07/13/18 03:26 AM
07/13/18 03:26 AM
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Joined: May 2012
Posts: 6,078 Fort Lauderdale, FL
DoubleWasp
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Joined: May 2012
Posts: 6,078
Fort Lauderdale, FL
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Use a good heavy duty engine coolant for diesel trucks. Almost all are designed to protect multi metal systems, including brass, copper, and high/low lead solder.
Peak Final Charge is a good one you can find almost anywhere.
07 Lincoln Navigator M1 0w-40/FU 68 Charger R/T / Supercharged 440 VR1/DBL7349 07 Ram 3500 4x4 / Cummins 6.7 /DBL7349 17 Maserati GranTurismo Cabrio
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Re: Cast iron block / aluminium head, what do you use?
[Re: FordCapriDriver]
#4812892
07/13/18 04:57 AM
07/13/18 04:57 AM
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Joined: Jul 2015
Posts: 4,676 Down Under
SR5
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Joined: Jul 2015
Posts: 4,676
Down Under
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I like G-05 HOAT in older cars. It's a hybrid coolant. IAT tech for fast action with OAT tech for long life.
--------------------------------------------------------------------------------- Castrol GTX Ultraclean 15W40 A3/B3 + Wesfil-Cooper Z154
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Re: Cast iron block / aluminium head, what do you use?
[Re: Kestas]
#4813185
07/13/18 12:21 PM
07/13/18 12:21 PM
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Joined: Sep 2005
Posts: 6,056 MIchigan
Warstud
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Joined: Sep 2005
Posts: 6,056
MIchigan
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For your 1988 Escort, Ford indicates you should continue using the conventional green coolant. Yep....Plus there's no reason to dump the fluid that's suppose to be in there.
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Re: Cast iron block / aluminium head, what do you use?
[Re: FordCapriDriver]
#4813675
07/14/18 03:56 AM
07/14/18 03:56 AM
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Joined: Oct 2015
Posts: 2,885 Balearic Islands , Spain
FordCapriDriver
OP
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OP
Joined: Oct 2015
Posts: 2,885
Balearic Islands , Spain
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I have this doubt because all the people in the forums tell me they use OAT Pink / Violet coolants,. Zoom in on the engine pic in this page from a road test from 1986 : https://www.flickr.com/photos/triggersca...7-bmHLHG-btAZ52This is a brand new car and it clearly has pink / red colour coolant in it not green.
1975 Ford Capri II Ghia 3000 V6, - Shell Helix HX3 20W-50 w/ 20% Rimula R4X 15W-40 HDEO. 1988 Ford Escort Mk4 Xr3i Cabrio, - Shell Rimula R4X 15W-40, w/ 30% Helix 3 20W-50. Both on G40 Si-OAT coolant.
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Re: Cast iron block / aluminium head, what do you use?
[Re: FordCapriDriver]
#4814379
07/14/18 11:19 PM
07/14/18 11:19 PM
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Joined: Oct 2015
Posts: 2,885 Balearic Islands , Spain
FordCapriDriver
OP
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OP
Joined: Oct 2015
Posts: 2,885
Balearic Islands , Spain
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Hmmm you're proably right about the forums, have hard some lousy advice on those in the past!
1975 Ford Capri II Ghia 3000 V6, - Shell Helix HX3 20W-50 w/ 20% Rimula R4X 15W-40 HDEO. 1988 Ford Escort Mk4 Xr3i Cabrio, - Shell Rimula R4X 15W-40, w/ 30% Helix 3 20W-50. Both on G40 Si-OAT coolant.
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Re: Cast iron block / aluminium head, what do you use?
[Re: FordCapriDriver]
#4821223
07/23/18 10:02 AM
07/23/18 10:02 AM
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Joined: Nov 2006
Posts: 20,998 MA, Mittelfranken.de
Trav
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Joined: Nov 2006
Posts: 20,998
MA, Mittelfranken.de
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I use John Deere Cool-Guard II in everything. New, old, mix metal engines, aluminum core radiators, you name it. Its probably the best coolant/antifreeze I ever used, the nice part is the testing strips you can check it 5-6 yrs down the road and change it or add an additive package to it. https://jdparts.deere.com/partsmkt/document/english/pmac/52394_fb_AntiFreezeCoolGard_II.htm
ASE L1, Master. Deutsch Meisterbrief.
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