Instructions for Optiflow sport filters

JR filters rectangular are exchanged with the original filter in the original air cleaner box. Installing these, it is usually best to push the filter into the lid of the air box during installation. This will place the filter properly in the centre and it will seal correctly. The filters/filter edges can be damaged by incorrect fitting*. On round filters the exterior diameter may be smaller on JR filters than on the original filters, but this will not have an effect on function. For Opti-Flow filterkit, follow the installation instructions. With their unique cotton fibre composition JR filters will last for years if maintained properly.

Cleaning is recommended after approx 10,000 kilometres. Depending where and when the car is used, cleaning may be required earlier e.g. In the spring and summer and when driving in highly polluted environments. Clogged filters* can cause engine malfunction and damage the engine.
During cleaning use only water based degreasing agents. Preferably environmental friendly. Spirit based degreasing agents or strong detergents can harm the cotton fibres.*
Remove the filter and spray the cleaning agent on the side where the air is goes in. Let the cleaning agent work for a couple of minutes. If the filter is very dirty an additional cleaning agent may help dissolve the dirt. Rinse the filter (from the back) under a tap or a shower using tepid water. Let the filter dry. Make sure the filter surface and the exterior rubber edge are undamaged.
If the vehicle is equipped with a coarse filter (leaf filter) before the air filter box, this needs be cleaned at the same time.Finally, spray the entire filter with JR special oil. Do not overdose the oil so the filter is dripping or the engine can absorb filter oil. Note.The filter material will be damaged by compressed air or high pressure washing.*

Round universal filters are made from polyurethane. The hose clamp must only be tightened until the filter is sealed and cannot come loose. If it is is too tight, the clamp will cut into the material and the filter flange will crack. These filters must be installed with some kind of support to ensure that excess movment does not damage the filter*.

*In these cases, warranty is no longer valid.