Thread: 335d air filter
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      03-12-2012, 10:07 AM   #3
seanblee
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Cotton gauze filters don't filter properly without any oil. By not oiling it, you're letting more small particles through into the engine, which slightly defeats the object of the filter in the first place
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2007 E92 335i SE auto | Quaife LSD | Birds B3 ARBs | Evolve Stage 1 | Morel Hybrid 402 | Rainbow IL-W8F | JL 10W3v3 | RF 3sixty.3 | Alpine PDX-V9