Black
Oxygen is replaced with plants and photosynthesis. In photosynthesis plants take in carbon dioxide and expel oxygen. This is why having plants is important to sustain human life.
hyddrogen replaced by oxygen because the zinc is an oxygen regents which reacts with H2
500 psi
1.12 hours
At least the slave cylinder. The clutch master cylinder can be replaced at any time.
It did when new. It should still unless a key cylinder has been replaced.It did when new. It should still unless a key cylinder has been replaced.
It should be replaced when it begins making a noticeable noise.
You should have a standby cylinder of oxygen available just in case.
As far as I know they can not be cleaned. Must be replaced.
Companies that supply Oxygen cylinders generally label the cylinder with their logo and phone number, you should be able to contact the equipment supplier to find out about returning it.
NO. there 2 different things / sensors.
A master cylinder should be replaced when it can no longer provide the pressure needed for the brakes to operate. You can tell it is failing when the pedal becomes soft.
The oxygen sensor is "done". It should be replaced.
Gas
To open the valve on an oxygen cylinder, you turn the valve.
No, the chain should last the life of the engine.