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While a pattern of premature failures in a specific OEM part could indicate a design flaw, isolated incidents are more likely due to manufacturing defects, material variations, or external factors like extreme weather or driving conditions. Even with rigorous quality control, occasional failures can occur. Warranties are in place to address these instances.

It depends on the specific part and the quality of the reproduction. NOS parts are original and correct for your vehicle, but they can be expensive and may have deteriorated over time due to storage conditions. Conversely, high-quality aftermarket reproductions use improved materials or manufacturing processes, addressing known weaknesses in the original design.

It’s important to follow the OEM fluid recommendations. While some universal fluids may technically work, they may not provide the same level of protection or performance as the OEM-specified fluid. Modern vehicle systems are often designed with very specific fluid properties in mind. Using the wrong fluid can cause earl deterioration, component failure, and even void your warranty. The slight cost savings of a universal fluid isn’t worth the potential damage.