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Fox Is it time to replace the coolant?

  • Thread starter Thread starter PonyGTrider
  • Start date Start date Sep 16, 2025
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Noobz347

Stangnet Facilities Maint Tech... Er... Janitor
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#21
  • Sep 19, 2025
  • #21
FastDriver said:
except for the annoying air pockets.
Click to expand...


Who you calling an air pocket?
 
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General karthief

wonder how much it would cost to ship you a pair
5 Year Member
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#22
  • Sep 19, 2025
  • #22
Noobz347 said:
Once again, this is your recipe for coffee and not coolant.

They just taste the same.
Click to expand...
Ah, no they don't, well kinda but only if you put too much sugar in the coffee....
and don't chew on the sock after.
now what were we discussing....oh, I got 2 gallons of full strength green and mixed it 50/50 and got 4 gallons, good thing too, left a clamp slack on the ranchero so needed most of it.
Basically unless you live in Alaska and/or go dashing through the snow just top it off and ride.
 
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Stang337

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#23
  • Sep 20, 2025
  • #23
If you really want to know how good or bad your coolant is, beside using the hydrometer there are plenty of theses types of products. I decided to see what the difference was using both. The test strips did say how bad the coolant was compared to the hydrometer as for as Ph levels etc.. Being that I couldn't remember how many years (probably 10+) I did have to have the radiator boiled out since the coolant left major sediment in it. Radiator shop said to change it every 4 years to be safe, especially since mine isn't a daily driver. Suffice it to say I replaced all the hoses and water pump too. Especially some being 35+ years old.

https://www.amazon.com/dp/B01CNHJ4Q...a95b19e08&sp_csd=d2lkZ2V0TmFtZT1zcF9kZXRhaWwy
 
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Noobz347

Stangnet Facilities Maint Tech... Er... Janitor
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#24
  • Sep 20, 2025
  • #24
Stang337 said:
since the coolant left major sediment in it.
Click to expand...

Tap water did this. Not coolant.
 
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Stang337

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#25
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Sorry for stating sediment, but it wasn't tap water. It was the silicate drop out from the antifreeze that clogged up the radiator. Which happens over time. It looked like little white balls at the end of the copper tubes and evidentially it turns to a gel type substance in the bottom.
 

Noobz347

Stangnet Facilities Maint Tech... Er... Janitor
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Jan 4, 1985
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#26
  • Sep 20, 2025
  • #26
Stang337 said:
Sorry for stating sediment, but it wasn't tap water. It was the silicate drop out from the antifreeze that clogged up the radiator. Which happens over time. It looked like little white balls at the end of the copper tubes and evidentially it turns to a gel type substance in the bottom.
Click to expand...

That doesn't usually happen unless the coolant is extremely old or an incompatible coolant is introduced.

3 years is about the limit for me.
 
E

edw794

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#27
  • Sep 20, 2025
  • #27
How do you "accidentally" taste coolant? Isn't that stuff poisonous?
 
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Noobz347

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#28
  • Sep 20, 2025
  • #28
Hasn't affected me.

 
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GOvert

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Sep 21, 2025
#29
  • Sep 21, 2025
  • #29
I've only seen one guy taste his fluids and that is the vice grip garage guy.
@PonyGTrider What kind of reading do you get with the battery disconnected?
 
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PonyGTrider

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#30
  • Sep 30, 2025
  • #30
GOvert said:
I've only seen one guy taste his fluids and that is the vice grip garage guy.
@PonyGTrider What kind of reading do you get with the battery disconnected?
Click to expand...
Haven’t measured it that way…
 

PonyGTrider

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#31
  • Sep 30, 2025
  • #31
edw794 said:
How do you "accidentally" taste coolant? Isn't that stuff poisonous?
Click to expand...
I was removing the lower rad hose and splashed a little bit by accident…
 
J

Jarhead67

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#32
  • Oct 5, 2025
  • #32
PonyGTrider said:
Hi all,
By accident I tasted a bit of coolant from my 306 engine and it was extremely acidic.
Reading around I found articles about testing the coolant condition using a DVM. I followed the instructions turning the volt meter on to VDC placing the red lead into the coolant in the radiator and the black lead to a good ground. I got a reading of -0.200 Volts but the minus indicates me it is inverted polarity. I then exchanged the leads and then I got the correct 0.200 Volts the articles said you should have 0.400 V or less to be good.

I google this anomaly and the suggestion I received was that my coolant has to be replaced as soon as possible.
I have an aluminum Griffin radiator and a magnesium sacrificial rod hanging inside the rad cap.
Can anyone share an opinion on this one?
I will certainly appreciate it
Click to expand...
Just change it
 
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Mindseye007

5 Year Member
Oct 21, 2020
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Oct 11, 2025
#33
  • Oct 11, 2025
  • #33
had my water pump changed last summer, how often should the coolant be changed ? i park my stang from DEC to end of April then bring her out in the spring in May as soon as i bring it out I always do a fresh oil change. I even had my z-spec T5 oil changed to keep it mint. so smooth like butter when changing gears. thinking next spring to do the Coolant, rear diff oil, and T5 oil change with the engine oil change all in one time..
 

AeroCoupe

lube between the nut and the face. I know my lubes
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#34
  • Oct 12, 2025
  • #34
I find it good to do it when I change the radiator, swap motors, pull the intakes, pull the heads, or replace a radiator hose. You know when you are doing simple maintenance stuff
 
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