The Difference Between Transmission Fluid and Differential Fluid

Many people use the terms transmission fluid and differential fluid interchangeably, but the two automotive fluids are actually quite different. In fact, knowing the difference is a critical part of good car care. Not sure which fluid your car takes? Always thought they were the same thing? Confused on which fluids your vehicle needs?

Continue reading to learn the difference between transmission fluid and differential fluid, how these fluids work, and more.

Transmission Repair Carmel Indiana 317-571-0800
Transmission Repair Carmel Indiana 317-571-0800

Differential Fluid and Transmission Fluid Are Not the Same

When it comes to differential and transmission fluid, there are many differences, but they all lie under the primary difference that separates the two most distinctively: application. Differential and transmission fluid are two different automotive fluids primarily because they serve two difference functions. One fluid is for vehicles with manual gearboxes and the other for automatic transmission vehicles. Which one is which? Let’s take a closer look.

Differential Fluid

Differential fluid, also known as gear oil, is designed for vehicles with manual gearboxes controlled by a clutch, pedal, and stick shift. Manual gearboxes are designed as a two-shaft system, and although this design gives manual cars more oomph, it produces an enormous amount of heat and friction. Differential fluid helps lubricate the inner moving components, thus supporting a smoother operation and protecting the engine from damage.

Key Attributes of Gear Oil:

▶ Thicker Viscosity
▶ Higher Heat Resistance
▶ High Pressure Resistance

Transmission Fluid

Opposite of differential fluid, transmission fluid is designed to work specifically with automatic transmission vehicles. Because automatic transmissions operate at lower degrees of heat and friction, they require a different level of lubrication. Transmission fluid is designed with unique properties that adequately lubricate the engine and support transfer of power.

Key Attributes of Transmission Fluid:

▶ Thinner/Lower Viscosity  
▶ Lower Degree of Heat Resistance
▶ Anti-Foaming Technology

FAQS About Transmission and Differential Fluid:

Can You Use Transmission Fluid in Place of Differential Fluid?

In emergency situations, you can put transmission fluid in your differential, but beware of the lower degree of viscosity compared to differential fluid. Your vehicle will burn through it quickly, so change it out or replace it with the right fluid as soon as possible.

Can I Use Engine Oil Instead of Differential Fluid?

Never, under any circumstances, put engine oil in your differential. This will result in devastating damages to your engine. Engine oil is much different than gear oil, mostly it cannot withstand high pressure. Therefore, engine oil should never be used in place of gear oil.

Will Something Bad Happen if I Use the Wrong Car Fluid?

There are damaging effects of using the wrong fluid in your car. Your vehicle might experience engine overheating, transmission breakdown, and internal engine damage. If you believe you put the wrong -fluid in your car or truck, consult with a licensed mechanic in Carmel, IN right away.

Does your car engine or transmission need some professional attention? Contact Autohaus Dierolf at 317-571-0800 for transmission repair and engine repair service in Carmel, Indiana. We are German factory trained mechanics who specialize in European auto service. Request a free estimate, anytime.

Related Posts:

Transmission Repair Solutions for European Car Owners
The Seven Essential Automotive Fluids Every Vehicle Needs
FAQS About Car Engine Flushes

European Auto Repair and Service - Carmel Indiana 317-577-0800
European Auto Repair and Service – Carmel Indiana 317-577-0800

When Do I Need to Change the Fluids in My Car?

If you were to refer to the owner’s manual of your vehicle, you may run into some confusion around the parts concerning the recommended maintenance and service schedules. This is because there is not just one simple factory schedule for your car in its manual. There is a schedule for “normal” driving, and a second schedule for “severe” driving. You see, the frequency at which you replace the fluids in your vehicle depends on the type of driving you do.

Continue reading to learn whether you are a normal or severe driver, as well as everything you need to know about your vehicle’s recommended fluid change schedule and how to get started at a trusted Carmel, Indiana mechanic near you.

Indianapolis Car Maintenance and Auto Service
Indianapolis Car Maintenance and Auto Service 317-571-0800

Normal Driving Versus Severe Driving

Before discussing the fluids that all vehicles require, and when to change these fluids, it is necessary to identify and understand the two types of driving and which types matches you. Most average drivers will simply need to follow the normal driving schedule. You are very likely a normal driver. But, rather than reading through the criteria of a normal driver, it is much easier to identify what severe driving is since normal is the more common type of driving. So, are you a severe driver? Check out the factors that will tell you so, below!

Severe drivers will exhibit all or most of the following habits or practices:

🚘 A vehicle is used for delivery or transportation purposes (i.e. pizza delivery, taxi cabs, food trucks, etc.).

🚘 Most excursions involve prolonged idling (i.e. stop and go traffic, rush hour, etc.).

🚘 Most excursions involve dusty and bumpy terrains (i.e. dirt roads, gravel, etc.).

🚘 A vehicle is used for hauling, towing, or carrying loads and freights.

🚘 Most driving trips are less than 10 miles, round-trip.

Automotive Fluid Changes for Normal Drivers

If you do not exhibit any of these driving habits or requirements, then you should follow the “normal” drivers schedule when it comes to fluid, filter, and lubricant changes. All vehicles require 7 vital fluids for safe driving, handling, and optimal performance. If you neglect to provide these fluid changes for your car or truck, it will quickly deteriorate and eventually breakdown. The seven fluids include motor oil, brake fluid, anti-freeze (coolant), power steering fluid, transmission fluid, battery fluid, and windshield wiper fluid.

When to Get Car Fluids Replaced

A car battery generally needs replaced every few years, depending on your driving and habits, and windshield wiper fluid can be re-filled as much as needed. All other fluids should be changed or refilled every six months or 5,000 miles, whichever comes first. Your local Carmel, Indianapolis car mechanic can answer any questions you have about factory scheduled maintenance for your vehicle. They retain the proper tools, training, knowledge, and resources to accurately assess your vehicle’s condition and make professional valuations and recommendations you can trust.

Auto Service and Maintenance for European Cars in Carmel, Indianapolis

Call Autohaus Dierolf at 317-571-0800 for European auto repair and service in Carmel, Indiana. Our German factory trained mechanics have more than 30 years of experience specializing in European make and model vehicles. We provide a wide range of automotive repairs and services, including factory scheduled maintenance and auto repair. Call 317-571-0800 for affordable and reputable auto maintenance in Carmel, IN today.

European Automotive Repair Carmel
European Automotive Repair Carmel Indiana 317-577-0800

The Seven Essential Automotive Fluids Every Vehicle Needs

When it comes to car care, your vehicle needs more than just a run through the neighborhood car wash every now and then. In adherence to most manufacturer’s instructions, it is important to service your vehicle’s tires, engine, lighting system, battery, and more. But undeniably, one the most vital maintenance practices you simply cannot neglect are your vehicles essential automotive fluids. There are seven automotive fluids that every vehicle needs to operate safely, or at all for that matter.

Continue reading to learn which 7 automotive fluids every vehicle needs, and where to get trusted Indianapolis car maintenance and advice.

European Auto Repair and Service
European Auto Repair and Service Carmel, Indiana 317-571-0800

➀ Motor Oil

Motor oil is one of the basic, primary fluids that all vehicle’s need to operate safely, or at all. Motor oil is intended to lubricate the moving parts inside a car engine’s crankcase. Without it, an engine will quickly overheat, causing the vehicle to break down. This is because all the moving parts within a car engine creates friction, which produces heat. The lubrication reduces this friction, which in return, prevents overheating. Motor oil protects an engine’s pistons, valves, and all its other moving parts. Have your oil changed every 6 months or 5,000 miles, more or less depending on how much you drive.

➁ Brake Fluid

The ability to stop a vehicle is just as important as the ability to make it go. Just like motor oil, brake fluid is also one of the most important fluids for any vehicle. A car’s brake system uses hydraulic pressure to make a vehicle come to a stop. When a brake pedal is pushed, the brake line system compresses the brake fluid, which then allows the hydraulic force to be transferred to the brake pads and rotors where the friction is made that stops a vehicle. If there is a leak in this system, or no brake fluid at all, a vehicle loses its capacity to stop upon request. Brake fluid must be re-filled on a regular basis. The general rule is to have your vehicle inspected for all fluid changes and replacements, as well as other factory services, every 3 to 6 months depending on how much you drive and the age of the car or truck.

➂ Radiator Fluid (Coolant or Anti-Freeze)

Radiator Fluid, also called coolant or anti-freeze, is extremely important for your car or truck. It is a heat-transfer liquid that prevents a motor from overheating. It does this by cycling through an engine and collecting heat as it flows; and then returns the collected heat to the radiator, which is then filtered and released through the exhaust and muffler. A car is not operational if it overheats. Operating a car without coolant can cause irreversible damages to the engine and other parts of the vehicle, as well as, put passengers and drivers in danger. Adding anti-freeze to your engine is simple and can be done on your own. Simply locate the radiator cap, unscrew, and our in store-bought pre-mixed coolant. Be sure to have your car’s radiator flushed annually by a professional mechanic.

➃ Transmission Fluid

Transmission fluid is not a solution that requires a car owner to check on their own. Professionals typically tend to these types of fluids when facilitating regular scheduled maintenance tasks. Transmission fluid is rust-colored, or almost a reddish hue. It is used to lubricate and cool the inner components of a vehicle’s transmission, similar to motor oil. 

➄ Power Steering Fluid

Power steering fluid is also typically checked and administered by a professional automotive technician during routine factory care. Power steering fluid is pressurized by a small hydraulic pump that is powered by the engine.  Its main responsibility is to make turning a car easier.  It increases the functionality of the steering mechanism that directs the car tires while driving on the road.

➅ Battery Fluid

Many vehicles today are manufactured with maintenance-free batteries; however, some older models will require a vehicle owner to manually replace the battery fluid on a regular basis. In these type of vehicle batteries, the individual cells need to be filled with the proper type of battery fluid in order for the vehicle to run.

➆ Windshield Wiper Fluid

Although commonly overlooked, a driver could almost not live without windshield wiper fluid! Mud, dirt, water spots, insects, fingerprints, and more can be distracting on a vehicle’s windshield. Windshield wiper fluid is a soapy viscous solution that can be controlled manually by a push of a button inside the car. This button or attachment is generally near the steering wheel. Depending on how often it is used, windshield wiper fluid should be refilled every few months or so.

Auto Repair and Factory Scheduled Maintenance in Carmel, Indiana

Call Autohaus Dierolf at 317-571-0800 to request a free estimate, or to schedule an appointment, for European auto repair or factory scheduled car maintenance in Carmel, Indiana. Our German factory-trained mechanics provide a wide range of automotive maintenance and repair services for all European make and model vehicles. Best of all, we offer free written estimates and extensive warranties on all our work. Don’t wait another minute to get your needed automotive work done. Call our office today to get started.

European Automotive Repair Carmel
European Automotive Repair Carmel Indiana 317-577-0800