Air and oil filters

Citroën specifies Purflux oil filters but there are other manufacturers producing similar units as well. For the air cleaner element, Citroën specifies Miofiltre, Lautrette and Quillery but only using its part number instead of some manufacturer code.

Some manufacturers produce replacement air filters. Probably the most widely known of them is K&N. These filters let more air flow through them, thereby increasing the performance of the engine. However, they fall behind in collecting dirt and dust particles: this means more damage to the engine in the long run, especially if you use your car in a dusty environment. You have to decide for yourself whether the higher performance is worth the higher risk.

Martin GUTKOWSKI

The best oil filter to use is Purflux. It has a patented internal structure different--and better--than the others. Both Champion and Bosch suffer from the fact that they are manufactured at many plants all around the world. Although the technology is supposed to be the same everywhere, there are significant differences between the quality of those filters. If you can be absolutely sure that your Bosch filter came from Germany or the Champion one from France or Belgium, it's all right. Otherwise, with Purflux (don't mix that with Purolator) you won't take any chances.

Avoid lesser quality filters. I have already lost a camshaft due to a Fiam filter. I bought the filter in good faith at a Citroën dealership and, in spite of a premium quality synthetic Castrol engine oil and more frequent oil changes than recommended, the eighth lobe of the camshaft (the one farthest from the source of lubrication) was gradually eaten away. The lubrication system was checked to see the cause and the filter was the only part found to be guilty.