Why is the coolant in my radiator Brown?
5 Answers. Coolant becomes brown from rust. If your coolant is brown, the coolant needs to be drained and the system flushed before it can be filled with fresh coolant. If the coolant is bubbling, there is a good chance that combustion gases from the cylinders are making their way into the coolant.
Why are the different colors of coolant important?
“ Coolants are one of those fluids that everyone ignores and ends up being forgotten and used for years and years in the car’s cooling system. Not many know the importance of the different colors of coolant available today.
What should the coolant pressure be on a brown engine?
The oil in the crankcase is just above atmospheric pressure, the whole coolant system will be a c.15psi. …and the oil system will be at 60-70 psi normal running and 90 psi when the il is cold.
What to do if your car cooling system is brown?
Not a reason not to buy a car. If you do buy it, flush the cooling system with a good 2 part flushing agent (see engines forum for recent post – 4 to 6 weeks ago, quite interesting) then refil with the correct coolant mixture. “Brown” isn’t descriptive enough, really.
Why is the coolant in my car Brown?
There was a problem with the cooling system – air pockets and bad water pump bearing – so I replaced the pump and drained the coolant. The coolant that came out was a brown, rusty colour.
Why are the different colours of coolant so confusing?
“That’s why it’s so confusing – you can open up the bonnet of a new car and have no idea what the coolant is based on. Similarly, if you buy a second-hand car, the colour of the coolant gives you no idea as to when it needs to be changed. “For example, say you buy a second-hand car and it has pink coolant in it.
How can you tell the type of coolant you are using?
“In days gone by, the colour of coolant was determined by the type of chemicals used to prevent corrosion — meaning you could tell a lot about the type of coolant used by its colour. “Older coolants that used Inorganic Additive Technology (IAT) were usually blue or green in colour.
Why does my Hg make my coolant look rusty?
Nasty looking stuff that does make your coolant look rusty. Sounds like someone’s been using water instead of coolant to me resulting in rust. The HG may not have failed yet, but it won’t be far off it.