Best oil for mazda cx 5. Engine oil

Hello dear car enthusiasts! To become an expert in the field of lubricants used in automobiles, you do not need to graduate from higher education institutions.

To do this, you only need to: be interested in what type of lubricant is suitable for which unit and know the frequency of its replacement. If you don't grease - you won't go! This old and wise truth was born at a time when wheels began to be installed on horse-drawn vehicles.

What only craftsmen did not use for lubrication. For starters, it was animal fat. Well, those lubricants that we use, made as a result of oil refining, have been used for a little over one hundred and fifty years.

Any unit or mechanism of a car that provides for mutual influence on each other various elements needs lubrication.

Parts are lubricated for a specific purpose:

reducing the friction force between parts and minimizing surface wear;
reducing the load on the parts, reducing the resistance due to the same friction force;
protection of elements from corrosion and aging.

Owners of front-wheel drive vehicles should get acquainted in great detail with such a type of oil refining product as SHRUS grease.

CV joint grease - get to know each other better

are special mechanisms. In order to establish a uniform transmission of rotational motion from one axle to another, inventors and designers had to rack their brains a lot.

As a result, we have a CV joint. A reliable and durable mechanism, but its service life directly depends on the availability and quality of the lubricant.

A hinge having an outer and inner cage, as well as a set of balls between them, is very similar to bearings. Everyone knows that for hinges it is very important to choose the right lubricant.

For CV joints, this is doubly important, because their elements are under enormous stress. Considering the importance of the assembly, specialists have developed a lubricant that is intended exclusively for these mechanisms.

On the shelves of car dealerships, you can find viscous material in hard or soft packaging with the inscription "SHRUS 4 Grease". Every driver should know that only special grease is used to lubricate CV joints and no other.

SHRUS grease - specifications

The special purpose of the CV joint requires that special lubricants be used for it. The hinge in its work experiences different types loads, sudden changes in the intensity of work and fluctuations in temperature conditions.

In this regard, for CV joint lubrication, specifications must be such as to provide the hinge with optimal conditions in any mode of operation.

The SHRUS 4 lubricant on the market and other types of lubricants for joints have the following properties:

high strength, which allows the lubricant to be reliably held on working parts;
sufficient viscosity to allow the substance, even when high temperatures do not go into a liquid state of aggregation and do not drain;
excellent anti-seize characteristics that prevent the appearance of scoring at the point of contact of parts;
good anti-corrosion properties to protect parts from corrosion;
high adhesion for a strong molecular connection of the lubricant with the working surface and water repellency;
excellent mechanical and physico-chemical stability, which allows the lubricant to maintain its properties as a result of long-term operation

What else does a driver need to know about SHRUS lubrication?

One of the most hotly debated issues that concerns car repair and, in particular, CV joints, is related to how often it is necessary to change the lubricant.

One of the key mechanisms of the car is the constant velocity joint (CV joint). This part is quite reliable, however, due to the cyclic rotational load, it requires timely maintenance.

A large number of CV joint lubrication options allow you to choose the right one for your car. Photo: ostagram.ru

The use of lubricant solves a number of vital tasks for a car:

Friction reduction;
Prevents premature wear of parts;
Reducing the overall load on the part;
Reduced fuel consumption for transmission loss;
Corrosion prevention;

With untimely maintenance, the transmission of torque decreases, an unpleasant knock appears when the steering wheel is turned.

Types of lubricants

Over time, more and more different lubricants appear on the market. They differ in their composition and properties. According to the composition of the lubricant are divided into two main categories:

lithium;
Based on molybdenum disulfide.

Lithium greases

Lithium greases for CV joints - the most common and affordable option. Photo: a.d-cd.net

The most common type of lubricant for transmission maintenance. The substances have a yellowish substance with excellent viscosity, which thickens at low temperatures.

Lithium compositions are characterized by high conservation properties, which have a pronounced anti-corrosion effect. This lubricant does a good job with dust and dirt entering the mechanism, but does not solve this problem as a whole. The drive system should be serviced every 40-50 thousand mileage.

Most lithium greases are neutral to polymeric materials from which modern anthers for CV joints are made.

Important: high-strength organic-based plastic can be dissolved by lithium compounds.

In such cases, you should look into the operating instructions, which should contain recommendations for servicing the CV joint and the compositions used for lubrication.

Widespread, due to low cost and sufficiently high efficiency;

React with polymeric materials;

The following products are widely available on the market:

RENOLIT;
XADO;
Very Lube;
Litol-24.

Compositions based on molybdenum disulfide

The specialists were faced with the task of extending the anti-corrosion protection of parts and reducing the likelihood of anthers reacting with polymeric materials. The problem was partially solved by using molybdenum sulfide.

The use of compounds based on molybdenum disulfide has become a new step in the automotive industry. Photo: Forum.rcdesign.ru

Increasing the resistance of parts to corrosion is the main feature of compositions based on molybdenum sulfide. The specialists who conducted the comprehensive tests indicated in their reports that after a run of 100,000, there are no signs of wear on the mechanisms.
Partial substitution of metal salt for organic acids made it possible to reduce the reaction with polymers. As a result, manufacturers recommend the use of this lubricant composition in almost all modern cars.

If moisture gets inside the CV joint, it can completely lose its properties, which in turn leads to the failure of the entire assembly.

IMPORTANT: you should carefully monitor the tightness of the anther so that the grease does not come into contact with water.

With all the advantages of the composition of this group, replacement is still necessary every 95-100 thousand mileage.

The market offers a wide range of products that differ both in quality and price. The following compounds are most often used:

Liqui Moly;
Texaco;
Moby;
ESSO;
SHRUS-4.

barium lubricants

Manufacturers do not stop for a second in search of more effective and alternative lubricants. Photo: avtorin.ru

Most of the new tools are either weakly effective or too expensive to manufacture.

An example of an alternative lubricant is barium, or rather compositions based on it.

Neutrality in reaction with moisture. If the tightness of the anther is damaged, there is no need to change the lubricant. Operation can continue until dirt and dust enter the CV joint.
Neutrality in reaction with polymers. Can be used with anthers made of any polymeric material.
Reliable protection against corrosion in extreme conditions operation (off-road, sand, etc.).

High price. Especially for well-known foreign manufacturers.
Low frost resistance. When operating in cold climates, it requires frequent periodic replacement.

Replacing the grease in the CV joint

There are several stages in the replacement process:

Disassembly of the chassis of the car.

We remove all elements holding the CV joint (ball rods, bearings). The mechanism is removed carefully to exclude the possibility of damage.

Apply notches on the CV joint housing and support, which will serve as guidelines for precise assembly (it remains just to combine them).

Dismantling the CV joint directly and removing the old composition. Separate the outer and inner parts. Clean parts from old grease and dirt. It is enough to wipe with a thick cloth or paper.

IMPORTANT: Do not use car shampoo or soap, residues of which may impair the quality of the lubricant. Exist special means cleaning.

Filling the CV joint with new grease. The outer part is filled to the limit, it is better if the lubricant protrudes. Inner part cost three-quarters full.
SHRUS assembly.
Installation in a regular place, installation of anthers. A small amount of lubricant should be placed inside the boot and distributed evenly over the inner surface.
Assembling the running gear of the car.

It should be noted that automakers and experts recommend that maintenance work be carried out on the CV joint at least a run of 60 thousand kilometers. Lubricant manufacturers convince the buyer of the quality of their product and recommend replacement every 80-90 thousand kilometers. With active operation in difficult conditions, the chassis should be checked every 40 thousand mileage. Conversely, if the car rarely leaves the garage, then replacement can be done at intervals of 4-5 years.

You can find a video instruction for changing the SHRUS lubricant here:

Important features and summary

When solving such an important task, it is worth performing several sequential actions:

Read the vehicle's instruction manual. In this useful book you can find all the recommendations of specialists in the maintenance of all components and assemblies.
Determine the properties of the materials from which the CV joint is made.
Determine the frequency of replacement of lubricants depending on the operating loads of the vehicle.
It is worth calculating the funds that will be spent on the purchase of lubricants.

When buying a lubricant, you should pay attention to the components contained in it. In addition to the above, there are also substances based on graphite, minerals, zinc, iron, etc. These products are mainly used to lubricate various types of bearings in other units and assemblies.

Summing up, it can be noted that the most optimal in terms of price-quality ratio are lubricants based on molybdenum sulfide. They have a number of advantages over other competitors and, subject to the tightness of the anther, provide reliable protection for the CV joint.

What is SHRUS?

The constant velocity joint (CV joint) is an important part used in front-wheel drive and all-wheel drive vehicles. The CV joint transmits torque from the transmission to the wheels, while being subjected to serious shock loads; therefore, a special lubricant is needed: it protects the CV joints from premature wear and corrosion.

What are SHRUS?

CV joints are various designs, but in modern automotive industry two main types are used. The first type is the classic Rzeppa-Lebro hinge with 6 balls. This type of CV joint is now most common as external wheel drives in front-wheel drive passenger cars and off-road four-wheel drive vehicles, less commonly used as internal or cardan joints. The second type - a tripod joint, which has smaller angles of rotation, but allows higher speeds and axial displacements, is used mainly as internal joints in cars. These two types of hinges require two absolutely different types lubricants.

Lubricant selection:

The Rzepp ball joint, due to the very high contact pressures, requires a lubricant containing between 3% and 5% molybdenum disulphide, depending on the load. The grease is based on a mineral base, a lithium complex soap is used as a thickener, and EP additives are often added to increase the carrying capacity. The resource of such a hinge and the lubricant itself is very large and approaches the resource of the car itself, if it were not for the rubber covers. Quite often, covers are torn due to mechanical influences. If the rupture of the cover can be quickly determined, then it is enough just to change the cover and lubricant, if not, then the hinge itself falls under the replacement. Most manufacturers supply covers for spare parts, along with CV joint grease in an impersonal plastic bag, often in insufficient quantities. In the CV joint, you may need from 40 to 90 grams of lubricant. Lubricants for CV joints from different manufacturers can differ significantly from each other, both in price and in properties, and one should not think that products with the highest quality are supplied with spare parts. That is why Liqui Moly offers a special grease for CV joints LM47 Langzeitfett + MoS2 in separate packages of 100 and 400 gr. LM47 significantly outperforms standard greases and is suitable for the highest loads and speeds, contains additional (except for molybdenum disulphide), anti-seize additives based on zinc-phosphorus compounds.

Tripod-type hinges, in view of elevated temperature(proximity to the gearbox and design features) require a high-temperature grease without solid inclusions, and the penetration (viscosity) of such a grease is somewhat lower than that of a classic CV joint grease. The tripods use lubricant with polyurethane thickener, first penetration class, upper temperature range up to +180°C and obligatory EP-complex.

The right choice of lubricant for constant velocity joints is the key to a long service life, as well as a comfortable and safe ride.

How often to change the lubricant?

Lubrication is installed at the factory for the entire life of the hinge, but no one is immune from surprises. The rubber or plastic cover of the CV joint may tear from contact with foreign objects or from overheating. Then dirt and water inevitably get into the hinge. If the problem is not detected in time, then the expensive hinge will have to be replaced and, accordingly, fresh grease should be put into the new part. If you regularly monitor the CV joint covers, then it is enough to simply replace the cover itself and, of course, the lubricant.