flush it dissconect both hoses and lfush it out good then refill with coolant flush it dissconect both hoses and lfush it out good then refill with coolant
"The Bulldog" is the name of the brown and green plane.
"The Bulldog" is the name of the green and brown plane.
leaking head gasket or improper fluid in cooling system
bulldog
When your coolant looks brown in color this means that you have got oil in your cooling system. This is not good, you could have a cracked head gasket or a crack in the block somewhere that is letting oil escape into the cooling system. The foam at the top of the radiator happens when the oil mixes with the coolant and then runs through the water pump. Hope this helps.
no, they are not related. tiny bubbles that make the radiator "foam up" is the result of exhaust gas leaking into the radiator. causes are blown head gasket, cracked cylinder head or cracked block. hth
change it! though could be mixing with your radiator fluid (green+red=brown) not good
Rust, most likely.
Once a year or when Anti-Freeze is Brown in Color
USALLY it's because the Transmission cooler that's located inside the RADIATOR HAS DEVELOPED A LEAK.The COOLING system & TRANSMISSION need 2 b FLUSHED after the RADIATOR is REPLACED -- OR BYPASS the RADIATOR TRANS cooler & put on an EXTERNAL cooler INFRONT of the existing Radiator. It sounds like the head gasket is leaking. I just had the same problem. It started with noticing just a thin layer of light brown foam when I removed the radiator cap. There was no foam or anything else wrong with the engine oil or trans fluid. My mechanic took a quick look at it and said to just keep an eye on it. I checked it every week with no change noticed, then sort of forgot about it for a month. When it started to shift a little rougher than usual, I checked the trans fluid again. This time the fluid was a nasty color of rusty brown and very opaque. Apparently it is not that uncommon to get a leak between the radiator coolant and either the engine oil or the trans fluid. Just speaking from my own experience, I believe it is more common to have the engine oil leak (bad head gasket or cracked head) in which case there will be obvious white/brown foam in the engine (on the oil cap) when it is checked. The trans fluid is under higher pressure than the radiator coolant so most of the flow is from the trans to the radiator, but as the system cools down, it can (and does) flow the other way. It just takes a little longer to notice the problem. Since radiator fluid can destroy an automatic transmission and trans fluid can destroy the seals in the radiator system it is very important to figure out what�s going on as quickly as possible...and NOT �just keep an eye on it�....won�t be going back to that shop. My van (a 94 Pontiac Transport) is in the shop now getting a new radiator (has two internal trans coolers inside of the radiator), and when that�s done I�m driving it directly to have all the trans fluid flushed. With any luck, it will start to shift smoother ...if not, it will have been a VERY expensive lesson. Hope this helps.
Most likely a really slight leak in the radiator allowing the fluids to mix slightly.
This is because the two different types of foam have different chemicals in them.