Diagnostic-based maintenance planning predicts MINI ownership costs by tracking system metrics before failures occur. In Fort Worth, 100°F+ heat degrades PCV valve diaphragms on 2011–2018 Cooper S models. Measuring crankcase vacuum against -28 to -32 mbar benchmarks via ISTA/D interface isolates vacuum leaks early, preventing unexpected turbocharger repair bills. Local Texas Heat and Immediate Diagnostics  […]