[TheMidnightNarwhal]

I was doing my vehicle check service and notice my coolant using a coolant tester reads at a bit higher than in the picture below (not my picture).

Would having a concentration high cause issues? I suppose the coolant is more thick to push through? Should I suck out some fluid and get it down to a lower mix like 50/50. My winter temps are at most -30 on extreme so 50/50 mix is fine. I guess I've been driving like this all summer to when I was hard on the car.

[ctuna]

There is a reason they call it anti freeze
A high concentration is more likely to do you good
in the winter.

[TheMidnightNarwhal]

Originally Posted by ctuna

There is a reason they call it anti freeze
A high concentration is more likely to do you good
in the winter.

I understand straight coolant/antifreeze could F up some things but I'm probably around 65% 70% now I would estimate.

Like what can happen? Coolant doesn't go where it's needed quickly or blows a hose or?

[Welcome to NBA Jam]

It is recommended not to exceed a ratio of 60% ethylene glycol-based coolant, as the freeze point will then typically start to increase again and defeat the purpose of coolant's freeze protection. It won't cause any other issues beyond that.

[TheMidnightNarwhal]

Originally Posted by Welcome to NBA Jam

It is recommended not to exceed a ratio of 60% ethylene glycol-based coolant, as the freeze point will then typically start to increase again and defeat the purpose of coolant's freeze protection. It won't cause any other issues beyond that.

No way? I did not know that's how it worked. I feel dumb now

Like I know one of the main purpose was for anti freezing as well as boilover but didn't know it went back down as the concentration was higher.

[Welcome to NBA Jam]

Originally Posted by TheMidnightNarwhal

No way? I did not know that's how it worked. I feel dumb now

Like I know one of the main purpose was for anti freezing as well as boilover but didn't know it went back down as the concentration was higher.

Propylene Glycol will, but Ethylene Glycol (our coolant) will not.



Science man. It's fvcky.

[ryan stewart]

Originally Posted by TheMidnightNarwhal

I understand straight coolant/antifreeze could F up some things but I'm probably around 65% 70% now I would estimate.

Like what can happen? Coolant doesn't go where it's needed quickly or blows a hose or?

Really just efficiency. As far as being an effective heat transfer medium water is better.

But if you arent dealing with truly extreme temps its not going to matter.

[John 070]

From years ago we learned to never go beyond 70% coolant. Real life proof, is my neighbor poured 100% into a hose system running under his porch. It burst. Pretty sure 100% is good to maybe 14F, and that's it. So I would do 60% so I didn't get too close. in reality 50/50 is good to -34F so it's not that common that beyond 50% is really needed.

[John 070]

Originally Posted by Welcome to NBA Jam

It is recommended not to exceed a ratio of 60% ethylene glycol-based coolant, as the freeze point will then typically start to increase again and defeat the purpose of coolant's freeze protection. It won't cause any other issues beyond that.

That's interesting, I think your chart supports what I was always told, 70% max.

Meaning, if you live in AK where it could matter, you want no more than 70%. 70% has more anti-boil than 60%. If I am not mistaken 100% has greater anti-boil than 70%.

[John 070]

Originally Posted by ryan stewart

Really just efficiency. As far as being an effective heat transfer medium water is better.

But if you arent dealing with truly extreme temps its not going to matter.

Again, my neighbor has an irrigation system running under his porch, and he asked me to help fill it. I remembered it was 100% concentrate so I told him, I seem to remember that 100% freezes at 14F or something. He said that's ok. It did end up bursting as we got temps near 2-5F that winter. If we had used 50/50 it would have been fine. But he's like me, old fashioned. If 100% costs $15, then 50/50 should cost $7.50, not $13.

[ryan stewart]

Originally Posted by John 070

Again, my neighbor has an irrigation system running under his porch, and he asked me to help fill it. I remembered it was 100% concentrate so I told him, I seem to remember that 100% freezes at 14F or something. He said that's ok. It did end up bursting as we got temps near 2-5F that winter. If we had used 50/50 it would have been fine. But he's like me, old fashioned. If 100% costs $15, then 50/50 should cost $7.50, not $13.

[oVeRdOsE.]

Originally Posted by ryan stewart

Really just efficiency. As far as being an effective heat transfer medium water is better.

But if you arent dealing with truly extreme temps its not going to matter.

this, water is the best media for a liquid to stock heat.

So the best mix would be : having max water concentration, and avoiding boiling point and freezing point as per your environment.

[Schmitz]

Originally Posted by ryan stewart

I laughed so hard at that meme...

[talisman311]

50/50 max. Antifreeze is a poor conductor of heat. Water does the work, the antifreeze provides lubrication, rust-inhibitors, freeze/boil protection, etc. You're not doing your engine any favors by running more than 50% antifreeze.