Tacoma and 4Runner 4WD Maintenance: Transfer Case and Differential Fluid Basics
Key Takeaways Sealed doesn’t mean maintenance-free. Transfer case and differential fluid breaks down from heat cycling and gear wear even without a dipstick to warn you. Winter 4WD use accelerates wear. Cleveland Heights drivers who engage 4WD regularly for snow put real load on components many assume never need attention. Cost gap is significant. Routine…