before you check the brake fluid, you have to clean the top of the reservoir carefully even a small amount of dirt falling into the brake fluid reservoir . bmw m3 e46 2002 – track prepared – road legal (2002). bmw 1 series cbs data. m635csi-bmw. the_jeep_now 1999 bmw 7 series 20838070032_original. bmw m3 – 2005,convertible, low mileage,excellent condition,fsh (2005). auto repair: how do i check or add brake fluid to my car or truck? – 1aautocom.