The Audi A3 Oil Filter is applied to keep the lifeblood of the engine clean to ensure that moving parts are not damaged between service periods. Its primary duty is to collect grit, carbon and metal flakes without obstructing the flow of oil so that high-quality lubricant can reach bearings during start-up as well as at high revs. To achieve this, the filter packs are densely filled with media composed of cellulose, synthetic fibers or a combination of the two and trap up to 99 percent of debris, whilst retaining the dirt in their pleats until the next change. The Audi engine of today is based on full-flow filtration supported by relief and anti-drainback valves to avoid pressure spikes and dry starting, a concept also applied in the sporty A3. Previous generations attached a spin-on canister, but more recent generations of Audi have taken a cartridge-like format. The two layouts are the same, but the cartridge eliminates waste such that only the inner Oil Filter part is replaced. Even higher-efficiency versions extend the drain time, particularly as the car computer monitors the oil life, yet even the heavy Oil Filter cannot hold that much oil, and it will be necessary to replace even the heavy one to rid it of its contamination and grease. The consequences of not replacing the Audi Oil Filter in time may be that the sludge will recirculate, depriving it of power and causing an expensive loss. The easy method of ensuring performance and long life of the engine is to regularly change the Audi Oil Filter and fresh oil.
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