Transmission fluid condition is a vital part of spotting Nissan Patrol signs of transmission trouble, and regular checks can alert you to problems before they escalate. Healthy transmission fluid should be clear or slightly reddish and free from burnt smell. If the fluid appears dark, cloudy, smells burnt, or contains metal particles, it may indicate overheating, contamination, or internal wear. Low fluid levels are another major concern — insufficient fluid can cause rough shifting, slipping gears, and eventual transmission damage. Keeping an eye on fluid condition and level during routine maintenance helps catch early signs of trouble. Technicians often recommend periodic transmission fluid flushes and replacements to maintain optimal performance, especially for vehicles exposed to heavy loads or frequent off-road use. Regular fluid maintenance goes a long way toward preventing severe transmission issues and extends your Patrol’s service life.