10 000 km engrasando la cadena con valvulina (lubricante para engranajes) ¿Cómo está?

Since I got this bike, I've been lubricating the chain with gear oil. It's a gear lubricant, and interestingly enough, it's recommended by manufacturers. How will the chain be after almost 10,000 km of use on dirt and asphalt? Should I continue using gear oil after checking the chain's condition after this mileage? Let's find out.