My coolant is Brown after one day..

Not liking the look of this.No visible leaks

 

Pretty sure that means oil is getting in the coolant, or your radiator is fucked. Did the level rise at all? If not then maybe you just have a really crudded up radiator or block

 

Smell the coolant and or test it/have it tested. Also, check the oil and don't drive it until you figure this one out. Could get really expensive really fast...

 

I will when i get home.Im praying it's not a head gasket

 

Well expensive obviously

 

How did you get to this point ?

All of a sudden your coolant in the overflow is rust brown??

Then it might be the brown Milkshake of oil and antifreeze mix??

Toyota Red coolant mixed with the Green can turn a pretty rust brown .

 

Yeah I forgot last time I put red in.But it already went through 1/4 of the reservoir.Im gonna flush it today.and really see.it got hot yesterday and didn't have any coolant so I put green in it when I was already at the gastation.I replaced a knock sensor recently.Im wondering why I'm going through coolant so quick still

 

What would the coolant smell like

 

It smells "sweet". That's why animals like it.

 

Ok

 

If you're consuming coolant that quickly then there is a big problem

 

Yeah,I'm gonna drain it out cause all I did was top it off.And go from there.There is no white smoke or visible leaks.

 

Pull a sparkplug. If its shiny clean, its being steam cleaned, and that aint good.

 

Ok I will do that and let you know shortly

 

May have to pull all of them. Gasket could be leaking in just one cylinder.

 

Ok

 

Doesn't smell sweet

 

If the coolant level is dropping then it’s going somewhere. Could be anything from a radiator leak (which it sounds like it’s not) to a bad gasket like others are saying

Leaning towards bad head gasket cause of the loss of coolant and the possible oil getting into the coolant

 

Don`t ever rule out the heater core since OP had no idea of the smell

then it might drain out the evap drain you might never take notice

 

Don't rule out the hearter core?