The main function of transmission fluid is to effectively lubricate the hypoid gears in manual and automatic transmissions, which are widely used in a wide range of mechanical equipment as well as vehicles such as trucks and cars. Transmission fluid acts as a lubricant that reduces friction between the moving gears, ensuring improved operating capabilities while eliminating wear and parts damage.
Different transmission fluids have been developed to meet the requirements of various equipment. Depending on their use, gears may need to operate at extremely high speeds and different pressures. The faster or more intensively they have to work, the hotter the gears will get, which means they may also need to work at high temperatures. In order for different transmission systems to cope with their unique workloads and working conditions, a variety of transmission fluids have been developed that are specifically designed to meet the needs of each application.
The Right Transmission Fluid for the Job
A reliable transmission fluid supplier will stock a variety of brands from leading manufacturers such as the Q8 and the case designed for a wide range of equipment. A wide range of machinery requires transmission fluids to operate effectively, such as power shift and automatic transmissions, brake boosters, torque converters, hydraulic clutches and couplings, motorcycle suspension forks, hydrostatic drives and even hydraulic systems. Equipment owners who are unsure of which oil to use for their equipment can always consult with a specialist transmission oil supplier who will be able to answer their questions.
Transmission oils are manufactured specifically for a specific purpose, so whether it is for a bogie lift or an automatic transmission, it is vital to select the correct oil for a particular piece of equipment. Transmission oils may sometimes feature multi-purpose additives to manage the operating pressures or environmental conditions they need to cope with, or have a viscosity specifically developed to suit the design of certain gears. While selecting the correct transmission oil for the equipment in question can extend its life, an incorrect selection can have an adverse effect, causing premature wear on parts.
It is important that operators always select the correct transmission oil for their equipment. An experienced transmission oil supplier will be able to provide expert guidance on the best type of oil and recommend reliable brands such as Mobil or Morris to suit the specifics of the equipment.
Specialty Oils
Typically, transmission oils are blended from a base oil with specially formulated additives. This oil is usually carefully refined to filter out any unfavourable characteristics while retaining qualities that may be beneficial to the equipment it is designed for.
In addition to the base oil, an additive package enhances the properties of the transmission oil, making it even more powerful. These properties include anti-scratch and anti-wear properties, protecting components from friction and damage during operation. They can also provide greater protection against rust and other forms of corrosion, protecting components when the transmission must operate in harsh or wet weather conditions. Equipment that must operate at high speeds and function properly even when components are exposed to extreme temperatures may also be injected with additives to improve thermal stability.
Manual transmissions may use a variety of different oils, including standard motor oil, heavyweight oils designed for hypoid gears, and even ATF (automatic transmission fluid) in some cases.
Automatic Transmission Fluid
Automatic transmission fluid, or ATF, is a type of transmission fluid used in vehicles equipped with automatic or self-shifting transmissions. This lubricant is usually green or red in color to distinguish it from regular motor oil and other fluids used in the car. These transmission fluids are completely optimized for the specific requirements of the transmission they are designed to work with. In addition to gear lubrication, they can also help with brake band friction, valve operation, and torque converters.
ATF is also used in some types of power-assisted steering systems, as an effective hydraulic fluid, and as a reliable lubricant in four-wheel drive transfer cases and even some more modern manual transmissions. Modern ATF varieties are typically made up of a base oil and a formulated additive package that contains a complex array of chemical compounds designed to provide important properties for a specific ATF specification.
Like manual transmission fluids, most available ATFs contain a blend of additives designed to improve lubrication qualities. These additives may include corrosion or rust inhibitors, anti-wear additives, and a range of detergents, surfactants, and dispersants to clean and protect metal surfaces, remove debris and other contaminants from metal surfaces. They can also be additives specifically designed to change or improve viscosity or increase the operating temperature and speed range of the transmission fluid.
Other additives are designed to extend the life of not only the drivetrain, but also the transmission fluid itself. Anti-oxidation and anti-foaming additives reduce oxidation and inhibit "boiling," effectively extending the life of a single application. Other additions to an ATF additive package can be petroleum dyes, pour point depressants, cold flow improvers, gasket conditioners, and high-temperature thickeners.
Importance of Checking the Transmission Fluid Level
It is critical to regularly check and evaluate the transmission fluid level during normal service intervals. A low transmission fluid level can cause the transmission to shift improperly or even fail to shift. Inadequate transmission oil can also cause damage to the internal parts of the transmission due to improper lubrication. Damage to internal components often means expensive repair work, replacement parts, and costly operational downtime during maintenance.
Regularly checking that the oil level remains stable is critical because by the time operators hear grinding noises and other signs that the transmission oil level is low, it may be too late to prevent the damage that has already been done. Unlike other equipment that requires lubrication, transmissions and other drivetrains are not as easily accessible or straightforward to inspect. Therefore, it is best to leave the task of maintaining the transmission oil level to the professionals.
