How does transmission fluid get dirty?

Your transmission fluid is constantly hard at work. Over time, the parts in your transmission wear down and “shed” metal into your transmission fluid. This turns the fluid from a clear bright red color to gray, brown or even black.

Why does transmission fluid get dirty?

What Should Your Transmission Fluid Look Like? If you’re able to check your own transmission fluid, there are a few things to look out for aside from fluid level. Over time, transmission fluid becomes dirty and contaminated, as one of its purposes is to clean metal parts within your transmission.

How does transmission fluid get contaminated?

The temperature of transmission fluid is regulated inside the engine cooling system. … Engine coolant surrounds the tank to help keep the fluid inside at a constant temperature. Any rupture of the internal radiator tank can allow coolant to mix with, and contaminate transmission fluid.

How do you know if your transmission fluid is dirty?

Dip the tip of your index finger into the fluid on the dipstick and rub the fluid between your finger and the tip of your thumb. The transmission fluid on the dipstick should be pinkish and almost clear. If it looks or smells burnt or has particles in it, have a mechanic drain and change the fluid.

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What makes transmission fluid turn brown?

I Need to Be Changed Now!” If your transmission fluid is dark brown or black, it needs to be flushed and changed right away. The reason why transmission fluid changes from bright red to brown to black as it ages is that is it oxidizing. Oxidation is bad for transmission fluid.

How do you know you need transmission flush?

If drivers notice their transmission grinding or making odd sounds when driving, it is a good idea to check the transmission fluid levels while the car is still running. If the fluid level seems normal, the vehicle most likely needs a transmission flush.

What happens if you get water in your transmission?

Water in the transmission fluid is highly destructive. Your vehicle’s transmission is made up of sensitive parts that quickly deteriorate when exposed to water. Contamination of the friction plates in the transmission will result in the transmission no longer being able to shift into any gears.

Does transmission fluid run through the radiator?

All transmissions have a cooling line that runs to the radiator. A separate fluid passage circulates the transmission fluid through a portion of the radiator to cool the fluid.

Is it better to flush or drain transmission fluid?

Proponents of transmission flushes will often argue that a flush is a better service because it replaces more of your transmission fluid. It’s true that removing your transmission pan or draining your transmission via its drain plug (as your car manufacturer intends) only removes about 70% of the fluid inside.

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How much does a transmission fluid change cost?

How Much Does a Transmission Fluid Change Cost? The cost to have your fluid changed by a dealer, service center or independent mechanic ranges from $80 to $250. The average cost is around $100 for both automatic and manual transmissions.

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