An Aisin transmission is engineered for exceptional longevity, frequently lasting anywhere from 200,000 to over 300,000 miles when subjected to normal driving conditions and proper routine maintenance. Because these transmissions utilize robust mechanical internals, high-grade tolerances, and durable clutch packs, adhering strictly to recommended fluid change intervals every 60,000 to 90,000 miles is the single most critical factor in ensuring trouble-free operation over decades of vehicle use.