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1. Oil generally leaks because of mechanical failures.
To contain oils there needs to be a mechanical seal of some sort.
This may be for the sake of argument a rubber ring or a flat strip or gasket seal of an appropriate material or even a propriety sealing agent which can be squeezed from a tube.
Simplistically a jar can be filled with oil and the lid which has a seal in it is placed on top secure enough to stop the contents leaking.
If that jar is connected to other jars by pipes to form a system they too need to have seals inserted where they join the jars so that there there are no leaks.
2. Seal failures can be caused by heat, chemical corrosion and or erosion , mechanical stress such as vibrations or bending or longevity of material properties such as the elasticity depreciating. Finally other causes can be attributed to wrongly fitted or inappropriate types of seals being fitted.
What else can I help you with?
Can a k Oil sensor leak oil?
can a knock sensor leak oil for 305
How do you fix your oil leak 1990 dodge spirit?
use leak stop or something. Where is your oil leak?
What might cause an oil leak on a 2002 Trailblazer?
engine oil leak
Why does your 1997 Honda accord run out of oil but there is no leak?
If you have no leak it is burning oil.
What zone of the ocean is the BP oil leak?
this oil leak is in the Gulf of Mexico
What is the cause of my oil leak on 1987 Toyota pickup?
they leak oil from the oil pump on the front of the engine
When you need a oil pressure switch do your car leak oil?
in some cases yes you will have an oil leak
Engine oil leak where?
There are a number of places an Oil Leak can occur take your pick.
Engine oil leak on my Peugeot 206 1.4 2002-?
You can use an oil stop-leak product to stop an oil leak on your 2002 Peugeot 206 1.4.
Can damaged oil filter cause oil leak?
If the casing is spilt a filter will leak an incorrectly installed filter will also leak.
How much oil can leak from bad valve cover gaskets?
If the leak is large enough, all of the oil could leak out in minutes.
Oil leak sealant for 1992 Honda accords?
There are several types of oil leak sealant for a 1992 Honda Accord. A few of the sealants that can be used are Bar Leak's seal repair, Lucas Oil, and Blue Devil oil leak sealant.
