GEN 1 Coolant Color - Is this Normal?

[Ikarah]

Did you check the bottom of the expansion tank before driving it around? If not, it may be some residue from before.

I did, it looked the same it's like a dark base, I'll go back and ask the technician maybe there's residue there he couldn't clean off

Get a pistol or rifle cleaning rod, and swab the bottom of the reservoir and see if that stuff comes away on a piece of old tee shirt.

I'll give that a shot and post back what I find

 

[Gryphon313]

The bottom half of the expansion tank is black plastic that is molded as one piece with the bottom of the air filter box.

 

[Ikarah]

The bottom half of the expansion tank is black plastic that is molded as one piece with the bottom of the air filter box.

So you're saying what I'm seeing there is basically normal..

 

[Gryphon313]

It may have sediment in the bottom, but due to the black plastic, it may be hard to see.

 

[Ikarah]

It may have sediment in the bottom, but due to the black plastic, it may be hard to see.

View attachment 395496

In that case I'll confirm but, thanks a ton for pointing that out very insightful

 

[Nex]

The plastic might also be stained from the oil before the flush.

 

[thatJeepguy]

Uhh, why would it be on the bottom of the expansion tank if oil floats on top of
Coolant?

 

[Ikarah]

Uhh, why would it be on the bottom of the expansion tank if oil floats on top of
Coolant?

I agree those are my thoughts too. Maybe the bottom has other debris that's not oil like rust.. but I'll check that. As for the coolant itself it seems clean

 

[Ikarah]

Checked everything took it to several mechanics there's no debris the coolant color is normal its just the bottom of the expansion tank that makes it look that way...