Vehicle Fluids

Vehicle Fluids

There are many different types of fluids in your vehicle. Here we have a summary of what may be in your vehicle.

Brake Fluid
Brake hydraulic fluid is used to pressurize front and rear cylinders that push the brake friction against the brake rotors or drums. Brake fluid is very “hydroscopic” which is a fancy word for absorbing moisture, and needs to be replaced when its moisture content gets to only 3%. This happens over a period of time, so only needs to be replaced every one or two years. If brake fluid becomes low, it’s almost always because of a problem with the hydraulic braking system or worn friction material. Extra Mile Auto Service can service, diagnose and repair all types of brake systems and fluids.
Vehicle Fluids
Automatic Transmission Fluid
Your automatic transmission works on high pressure fluid traveling through very small passages and solenoids. Like engine oil, transmission fluids also differ in type and viscosity, so you need the proper fluid installed in your transmission. Replacing this fluid on a scheduled interval of 30,000 miles may help you avoid costly transmission problems down the road. Transmission fluid is usually red, however darkened or black transmission fluid indicates it should be replaced soon, in fact it may be too late for your transmission. This is why Extra Mile Auto Service looks at your fluids every time you bring your vehicle in for service. Most people don’t realize changing your transmission fluid is less expensive than changing your oil when calculated over the same mileage. Just like dirty oil can ruin your engine, dirty transmission fluid can ruin your transmission.

Power Steering Fluid
Power steering fluid is also part of a high pressure hydraulic system. It’s the “push” behind the steering wheel and gives you the ease to turn the wheel. Over time parts begin to wear, metals, moisture and dirt accumulate in the fluid. This can lead to costly repairs of the steering pump or steering gear if the fluid is neglected. Extra Mile Auto Service can provide you a recommendation on your steering system needs.

Coolant (Anti-freeze)
Coolant should be the proper mix of anti-freeze and water to both keep your car cool in the summer and freezing in the winter. Antifreeze is a chemical liquid that is added to the water in an engine’s cooling system in order to lower the freezing point. A 50% ratio seems to be best for our north east area bringing the freeze point to around -34 deg. If the cooling system does not have the proper mix your cooling system may freeze, or cause over heating during those hot days, both can cause costly damage to the system and even the engine. The coolant also protects your engine from corrosion, aids in heat transfer, and prevents scale from building up. There are three basic types of coolant and are manufacture specific, normal or long life, we choose long life coolant when servicing a cooling system. There is also a silicate-free or organic acid (OAT) technology used in specific vehicles and should not be switched with the more common silicate anti-freeze.

Motor Oil
It has been said that motor oil is like the life-blood of your car, and in some aspects that’s true, it lubricates, protects, and cools the engine. This is why you should change your oil and oil filter after 3,000 or so miles.


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