We have stocked parts for important services to keep your Audi going. Virus outbreak in Europe and future European restrictions might effect our parts supply. We all want to feel safe in our cars. Dynarev recommends replacing your cabin filter, all though cabin filters are rated down to 0.3 microns, the corona viruses SARS-CoV-2 (the actual virus that causes Covid-19) has a size between 0.06 to 0.12 microns. What makes the filter still effective is that the virus attaches to other particles that are bigger. If it dose not attach to a particle, it is small enough that it dose not behave like bigger particles in the air. Particles smaller than 0.3 microns exhibit what’s called brownian motion – which makes them easier to filter. Brownian motion refers to a phenomenon whereby the particle’s mass is small enough that it no longer travels unimpeded through the air. Instead it interacts with the molecules in the air (nitrogen, oxygen, etc), causing it to pinball between them, moving in an erratic pattern. Lab studies show that SARS-CoV-2 stays a live for up to 3 hours suspended in the air. Driving threw a populated area with out any type of filtration puts you at risk. Remember that the virus also spreads threw touch so remember to disinfect door handles and steering wheel, shifter and all items that you keep on touching.