Yellow car fluid leak

Yellow car fluid leak: There is nothing more disconcerting than walking away from your car that appears to be in mint condition, only to return to discover a puddle of mysterious fluid pooling under it. This does not bode well for your car and is usually a sign of a fluid leak. While the fluid can be anything from motor oil to power steering fluid, at Oxmoor Toyota we created this detailed list to help you identify exactly what is leaking from your car.


A car is a complex piece of machinery that uses many fluids to function properly. While any of these fluids can leak from time to time, the color and texture can help identify which fluid is leaking. When your car has a fluid leak, you may need to make an appointment with your mechanic so you don’t find yourself stuck on the side of the road waiting for a tow truck and an unwelcome and disturbingly high repair bill. With that in mind, here are some of the identifying characteristics of the fluids that keep your car running smoothly.

red fluid

There are two fluids used by your vehicle that are red. These are automatic transmission fluid and power steering. Both are hydraulic fluids. You’ll want to check your owner’s manual to see if your vehicle, like some others, actually uses automatic transmission fluid in its power steering system.

The color of the power steering fluid will be affected by time. If fresh it will be red, but as time passes it will turn reddish brown before turning antique brown. You can identify power steering fluid through other attributes, such as its oily feel and thin consistency. It also has the scent of burnt marshmallows.

Automatic transmission fluid is also red when new. As the miles progress, it will change to a reddish-brown color. It is slippery to the touch and smells of petroleum. If you suspect your transmission fluid is leaking, you’ll need to schedule a transmission inspection.

Light yellow

If you see yellow fluid leaking from your vehicle, don’t drive it. The fluid leaking from your car is probably brake fluid. When fresh, brake fluid is light yellow in color, but darkens as it ages. If not maintained, it can even look like a dark brown. If you touch it, you will notice its oily and slippery feeling. It also has a rather distinctive smell like fish oil. You should call your mechanic immediately so that the brake system can have a good service. You may need to repair or even replace your brake lines.

Orange Fluid

Automatic transmission coolant and fluid may be orange in color. When the coolant is orange in color, it may be a sign that rust has built up in your car’s cooling system. If you smell something sweet and feel something slimy, the leaking fluid is most likely coolant. One of the main causes of engine damage is coolant loss, so if you have a coolant leak, you’ll need to take your car to the mechanic as soon as possible.

Your automatic transmission fluid appears on this list again because as it ages it can also turn orange. If you’re not sure if you have an automatic transmission or a coolant link, calling your mechanic to have it inspected may only help.

Pink, yellow or green liquid

If you notice a pink, yellow, or green leak, you are witnessing a refrigerant leak. Coolant can also leak from multiple areas of your car’s cooling system. Ignoring a coolant leak is not a wise choice, as it will ultimately cause your car’s engine to overheat. Once the engine gets to that point, you’ll have a pretty hefty bill to pay for repairs. It is always much more profitable to take your car to the workshop to take preventive measures.

blue fluid

There is only one fluid that is blue and that is windshield washer fluid. This thin, watery liquid smells like your everyday window cleaner. It can come in other colors, like green, and while a cracked washer fluid reservoir doesn’t signal the end of your car’s days, it’s a good idea to call your mechanic so he can check it out for you.

brown and black

Motor oil is light brown when first used and darkens each time it passes through your car’s engine, collecting dirt and combustion byproducts in the process. If thick, slippery fluid builds up under your car that looks brown or black, you have a possible motor oil leak on your hands. If your car is only experiencing a small leak, you can avoid any problems by keeping your oil level to max until you have time to take your vehicle in for an inspection, which we recommend doing as soon as possible.


There are two different fluids that are transparent, water and gasoline. If you have water leaking from the underside of your car, you will be able to identify it by touch and a good sniff as well. Fortunately, if it’s just water collecting under your car, you don’t have to worry, as the condensation is most likely simply draining from your air conditioner.

On the other hand, a clear fluid could also be gasoline. Again, you can trust your nose here to pick this fluid out of a lineup. Now, if you can see a gas leak from your car, you’ll need to call your mechanic right away. Do not drive the vehicle until you have been able to speak to a professional.

What are the neon yellow spots under my car this winter? Does my car have leaks?

I work full time as a service consultant in upstate New York, I started my career as a mechanic and have a degree in automotive technology. Last week my mom texted me that her car was leaking neon yellow fluid. I was a bit perplexed by this leak. Not because of the leak itself, but because of the color of the liquid. Nothing on your Nissan Rogue is neon yellow.


Throughout the week, several customers walked into the store where I work with the same complaint as my mother. As hard as we tried to find a leak, we couldn’t find a single leak on any of these cars. And once again, the neon yellow description had us all stumped! Like my mother’s Nissan, none of the cars we looked at did not have fluids or oils remotely resembling the mystery fluid’s description.

The investigation begins…

After a week of mysterious leaks on numerous cars and customers, I started doing some digging. I have spent 20 years of my life in the automotive fields and have yet to experience such a strange series of events. After a few brief science lessons courtesy ofGoogle,I finally had my answer. Turns out the mystery fluid was the result of the recent snow storm we had. New York State is not too shy about the use of road salt. They must use mountains that are worth every winter. To fully understand the cause, you need to know what type of metal is used in modern exhaust systems. The main culprit is zinc. Used to help prevent rust on galvanized metals, it actually turns yellow when combined with iron and a catalyst. It turns out that salt is a great catalyst for corrosion.

How to tell what is leaking based on the color of the fluid?

Leaks are a very common problem faced by car owners. Going through this blog will help you determine what is leaking from your car by taking a good look at the fluid color. Not all people are car experts, so these tricks can be of great help to them.

Amber, Black or Brown

If your vehicle’s leak is amber, black, or brown in color, it must be engine oil. Motor oil is generally amber in color when fresh. It may also be brown or black if the engine oil has not been changed in a long period of time. You should be aware of the fact that motor oil leaves a slippery coating on your fingers that cannot be easily wiped off. This is one of the most common types of leaks found in cars.

Clear, Light brown, Yellow, Brown

Brake fluid is clear when fresh. Over time, the color can turn yellow, light brown, and then brown, as brake fluid typically darkens over time. This fluid is very slippery and it is recommended not to ignore brake fluid leak for a long time.

reddish or red

This indicates a power steering fluid leak. In case you see this type of leak, check the fluid level in the power steering reservoir and look for leaks in it.

Bright or dark red/orange

This may be due to a transmission fluid leak. This fluid is generally a shade of red and varies from bright to dark. Transmission fluid is slippery. Some of this liquid comes in other colors like orange etc.

Green, Amarillo or Pink

The engine coolant used in cars can be green, yellow, or pink in color. To check for a leak of this fluid, you need to look at the coolant surge tank. This fluid is mostly viscous in nature and has a sweet odor.


Windshield washer fluid is mainly blue in color. Leaks can be due to the degradation of the reservoir tubes for use over a considerable period of time.

Now, you need to take into account which color indicates the leak of which particular car fluid. Ignorance of fluid leaks can cause serious damage in the future. So you need to take care of these issues right away while you have plenty of time on your hands. To do this, you can choose to take your car to a car maintenance shop. It can also be very useful to take your car for regular checkups and general maintenance to avoid all such circumstances.

Mechanic Explains What That Yellow Snow Is Under Your Car


We all know the rule about yellow snow: stay away. But should you worry about it when it comes from under your car?


Some drivers who pulled their cars out of the snow this week and then drove off may have seen the yellow-green stained snow in their parking spaces.


The owner of 4th Street Auto Repair in Duluth, Gary Lofald, said that after major snow storms, the shop gets a few calls from drivers concerned that their cars are leaking fluids like antifreeze.


As it turns out, it’s usually the tailpipe gas that creates condensation from all the snow under it as your car warms up.

“As exhaust, gas leaves your engine through your catalytic converter through this resonator, it’s called, and through the tailpipe, and down into the muffler, it comes out as a moisture, harmless liquid that in The reality is, it comes out of these drains and that color is the lime green that you’ll see in the snow there,” Lofald explained. “And that’s where the phone calls come from, it’s that particular color. Once again, totally harmless condensation coming out of your exhaust system.”


He added that drivers should make sure their car has enough antifreeze for the winter.


Antifreeze works to keep the engine cool when it’s hot and warm when it’s cold.


It also helps prevent engine corrosion.


“It should be fine 35 to 40 degrees below, at least 32 degrees below, so it’s very important that you have the proper coolant in your vehicle,” Lofald said. “All makes, models, have different types of refrigerants. Be careful if you are adding it yourself. Make sure you get the right coolant for it.”


If you need to get your car fixed this winter, you’ll want to call a mechanic as soon as you can.

We hope the article about the yellow car fluid leak and the related information is helpful to you. If you have any questions, please let us one on our website Auto Oil And Fluid!



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