1. When fitting the catalytic converter do not use exhaust paste in the joint in front of the cat. When the exhaust paste hardens it can break off and damage the monolith. Paste dust can also block the monolith.

2. Always use the correct fuel for your car.

3. Never use a fuel additive without first reading the instructions to find out if it is suitable for a vehicle fitted with a catalytic converter. If unsure consult the manufacturer of the additive.

4. Never attempt to bump or tow start your car. This causes unburned fuel to be injected into the catalytic converter causing the monolith to overheat and melt.

5. Never tow anything that is too heavy for your vehicle to cope with. For example, an overloaded caravan will actually push a car along when it travels downhill. This sends unburned fuel into the exhaust system and and can cause the monolith to melt down.

6. Have your car regularly serviced to the manufacturers specifications. In particular make sure the engine is running properly. A poorly tuned or misfiring engine will damage or block the monolith.

7. Take care when driving through deep puddles, fords or parking anywhere there is deep snow. The catalytic converter operates at an extremely high temperature and when it comes into contact with water or snow it cools down rapidly. The steel shell cools more rapidly than the monolith and in extreme circumstances the monolith can be crushed as the steel shell contracts.

8. Drive slowly over speed bumps or any uneven road surface to reduce the chance of the exhaust system being grounded and the catalytic converter being damaged.