Blue smoke at startup? Oil consumption creeping up between changes? Minor leaks from valve cover or oil pan gaskets? Before you tear the engine apart, try this first. Liqui Moly Motor Oil Saver regenerates the rubber and plastic seals inside the engine oil circuit that have hardened with age. It won't fix a catastrophic failure, but for the gradual seal degradation that causes most oil consumption and minor leaks on high-mileage European engines, it works. Add it to your oil, drive 400-500 miles, and see if the consumption drops. Safe for turbocharged engines, catalytic converters, and DPF/GPF systems. Not for wet clutches.