Complete Fluid Replacement Guide for Toyota & Lexus Vehicles

Comprehensive Fluid Maintenance for Toyota/Lexus

• 💡 This guide demonstrates how to replace every fluid in a Toyota/Lexus, using a Lexus GX460 as an example, to empower DIYers and inform those who prefer professional service.
• ⚠️ It's recommended to start fluid maintenance on a cold car to prevent burns and ensure accurate fluid level checks.
• 🚗 Engine oil and filter, engine coolant, transmission fluid, transfer case fluid, differential fluid (front and rear), brake fluid, and power steering fluid are all covered.

Engine Oil and Coolant Procedures

• 🛢️ For engine oil, locate the drain plug (typically 14mm for most Toyotas) and the oil filter (canister style requires a specific tool, spin-on filters are simpler).
• ⚠️ Always use an original drain plug gasket for a reliable seal and torque to specification (e.g., 30 ft-lbs for the drain plug, 18 ft-lbs for the oil filter).
• ❄️ For coolant, locate the radiator cap (may be under a cover), ensure the engine is cold, and use a rag to safely release any pressure before opening.
• 💧 A spill-free funnel is recommended for refilling coolant to ensure a clean and effective bleed, using the correct coolant type (pink for Toyotas post-2004).

Transmission, Differential, and Transfer Case Fluids

• ⚙️ For dipstickless transmissions, locate and loosen both the fill plug and drain plug before draining to avoid getting stuck.
• 📏 Transmission fluid level adjustment requires specific temperature ranges (95-115°F for GX460) and a standpipe to set the correct level.
• 🏔️ For differentials and transfer cases, loosen the fill plug first, then the drain plug. Note the magnet on the differential drain plug collects sediment.
• 💰 The video highlights the high cost of Toyota's recommended fluids for differentials and transfer cases, suggesting aftermarket alternatives like full synthetic 75W90 as a more economical and effective option.

Brake and Power Steering Fluid Replacement

• 🛑 Brake fluid is hygroscopic and absorbs moisture, necessitating replacement. Use a sealed container and fresh fluid.
• 🛠️ A vacuum bleeder or pump can be used to remove old fluid and bleed the system. Ensure bleeders are not seized before starting.
• 🔄 For power steering fluid, drain the reservoir, then repeatedly turn the steering wheel lock-to-lock with the engine running, replacing fluid until it runs clear.
• 🚗 After all fluid changes, it's crucial to reinstall all covers and perform a final check for leaks and proper fluid levels.