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Care & Repair

How does DropStop work?

Over time, all sealing materials lose their plasticizers (elastomers). This process is further supported by continuous hot and cold temperature changes. As a result of this insidious process, seals / gaskets begin to contract, increasingly harden, and finally even break. As a result, a loss of oil can no longer be prevented!

DropStop contains high-grade plasticizers (elastomers) that are compatible with every kind of oil (mineral, partly or fully synthetic). By adding DropStop to the oil, the plasticizers directly reach the seals and can penetrate them or can be absorbed by the sealing material. The seals swell and become elastic again. Potential wear at shafts can be compensated for and the seal lips seal properly again. Loss of oil due to leakages at elastomeric seals can be fixed this way.

In which units / machines can DropStop be used?

DropStop can be applied to units / machines like engines, compressors, hydraulic systems, transmissions etc., in which mineral, partly or fully synthetic engine oil, gearbox oil as well as hydraulic oils are used.

For what kind of seals is DropStop suitable?

DropStop is suitable for all rubber and neoprene seals that are based on elastomers.

In what kind of seals does DropStop not work?

DropStop is not suitable for seals made of packing material, shaft seals made of graphitized ropes with asbestos, flat gaskets made of paper, cork or metal (e.g., cylinder head gaskets) as well as for cracked materials.

Can DropStop cause damages?

No, DropStop does not cause any damages. No sealing material, whether old or new, is damaged by DropStop. Furthermore, DropStop does not contain chlorine or other solvents that could damage the treated units in the long run.

Can I also use MATHY-DropStop for my motorcycle with wet- / oil bath clutch?

Without question, you can use MATHY-DropStop in your motorcycle. All elastomeric seals / shaft seals become elastic and sealed again. MATHY-DropStop is mixable with all mineral and synthetic oils.

What type of oil is used in my power steering?

The question what type of oil is used in a power steering is irrelevant with respect to DropStop because it can be used with all types of oil; it takes effect at the elastomer sealings / gaskets.

How much oil goes into my power steering?

Usually, the power steering of cars has an oil filling capacity of 0.9 to 1 liter of oil. For adding DropStop this is irrelevant because 250 ml can safely be added without affecting the function of the oil.

Why should MATHY-DropStop and MATHY-VS not be used together?

Both products are completely different in their modes of action because their compositions are based on totally different additive packages. Combining the two additives could cause the whole the oil composition to become unstable. However, the separate use of each product in combination with MATHY-M is possible.

I have already been driving for many kilometers after adding DropStop, however the oil is still dropping. - Why is that?

How fast DropStop takes effect depends on the amount of elastomer (plasticizer) the seal has lost already and thus, how much has to be returned or absorbed again. DropStop reaches its full effectiveness after two weeks of regular use of the machine. If after that time no noticeable improvement can be seen, there is most likely a mechanical damage of the seal. It has probably cracked. In this case a disassembly is necessary. If only a slight improvement is noticed you can safely add more DropStop so that the seal can absorb the still missing plasticizers.

When does a preventive use of DropStop make sense?

For most vehicles it is common knowledge that they will experience oil leaks after the sixth year in service. More exact information with respect to certain types and brands of vehicles can be found in the relevant internet forums.

It is recommended to start a preventive use of DropStop in the fifth year in service of a vehicle.

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