Tested my coolant for the first time....

[swampy_swimmer]

How often do you replace the coolant? What if your coolant is in OK shape, would you still replace it if it's time?
My truck is at 140K now, last time coolant was replaced at 91K when they replaced the water pump.
I thought to drain it but decided to check it with one of those cheap testers and it shows that the coolant is fine. I checked the new coolant and it shows exactly the same as in the radiator.
What do you think?

 

[pauldub]

What coolant attributes did you check? Just the freezing point? You can do the research, but I think it's the pH that you need to check.

 

[swampy_swimmer]

What coolant attributes did you check? Just the freezing point? You can do the research, but I think it's the pH that you need to check.

Yes, I think just the freezing point those testers show. I had cheap one with the floating balls.

 

[djr01974]

I make a habit to change my coolant Once a Year. Same time every year, June. That's just me. But I guess if you don't want to do it that often , every 30K

 

[alumarine]

I think the freezing protection will stay the same for a long long time.
The corrosion resistance does break down.

You need to check the ph for that.

 

[swampy_swimmer]

I think the freezing protection will stay the same for a long long time.
The corrosion resistance does break down.

You need to check the ph for that.

Ok then. It would be easier to change it.

Thank you.