Low miles, old fluid and valley gradients
Cars around Purley town centre, up on the Webb Estate and along the Promenade de Verdun often belong to owners who drive carefully and locally, and 5,000 or 6,000 miles a year is normal. The 24,000-mile figure attached to a major service might be five years away. Brake fluid will not wait five years, because it takes up water from the air through the reservoir and hoses whether the wheels turn or not, and it is a strict two-year item for that reason.
Purley is also the wrong place to be casual about it. The town sits in a valley, so getting anywhere involves a descent, whether that is down the A22 Godstone Road from the Kenley side or dropping into the Purley Cross gyratory where the A23, A22, A235 and A2022 all meet and heavy vehicles turn across the lanes. Gradients put sustained heat into the brakes, and heat is what exposes fluid that has been quietly absorbing water for four years.
We change the fluid completely rather than bleeding a little through, working from a sealed container in the grade the car calls for and cycling the ABS unit where it is needed to clear the old fluid out of the pump. Moisture content is tested before and after and both figures go on your report. Spark plugs and the diesel fuel filter are inspected against your engine's actual schedule, and if they are nowhere near due we will tell you so.
The full service is included alongside: oil and oil filter, air filter, cabin filter, wheels off with brake measurements recorded, coolant and battery tests, fault code scan and a road test that will include a hill. Allow most of the day. Written quote before anything starts, no work added without a call, and a 3-month workmanship guarantee. The drive is Foxley Lane and then straight up the A237.

