What’s this red stuff leaking? Is it coolant?

Seeking Advice
1

Here’s a pic of what I’ve found leaking. What could this be? It’s dried up and looks like red gunk.

red gunk
red gunk633×832 51.6 KB

2

Coolant is the correct answer. Trans fluid never gets crusty when exposed to air.

3

Coolant. Toyota coolant is pink

4

Amelia said:
Coolant. Toyota coolant is pink

Ahh so might need a new radiator

5

Zaren said:

Amelia said:
Coolant. Toyota coolant is pink

Ahh so might need a new radiator

Most likely water pump

6

hawley said:

Zaren said:
Amelia said:
Coolant. Toyota coolant is pink

Ahh so might need a new radiator

Most likely water pump

Is that a common problem?

7

@Zaren
Unfortunately, yes, it’s a common problem across a lot of Toyotas, not just Tundras.

8

That is your water pump. Fairly common problem on the 5.7. So is the valley plate leak, but that would be the same dried pink coolant on the rear/bottom of the engine/transmission (it runs down from the top where the valley plate is)

9

Water pump

10

Coolant for sure with the location of it

11

Coolant crust, dripping down from somewhere on the front of the engine behind the radiator. The most likely answer is the water pump.

12

Time to replace the water pump.

13

Idk what you’re leaking but that looks like exfoliating corrosion

14

I just had to replace alternator and water pump on my 2012 Tundra. I wish they made the alternator easier to change so I didn’t have to pay them 1k for both

15

Questions: What year and how many miles?

16

Looks like it might be either ATF or coolant. I think the ATF is red.