About this Video

• Video Title: BIGGEST Car Maintenance Lie: What DEALERS Won't Tell You
• Channel: Car Wizard
• Speakers: Car Wizard, Mrs. Wizard
• Duration: 00:16:55

Introduction

This video debunks the common claim that some car fluids last a vehicle's lifetime. The Car Wizard uses a 2015 Lexus ES300h with 187,000 miles to demonstrate that transmission fluid, among other fluids, requires periodic service, contrary to what some dealerships claim.

Key Takeaways

• Dealerships often falsely claim that certain car fluids (like transmission fluid) are "lifetime" fluids, requiring no service. This is a major lie in the automotive maintenance industry.
• Transmission fluid should be serviced at least every 100,000 miles. Over time, contaminants, heat, and friction cause the fluid to degrade significantly. The video shows a visual comparison of new and used transmission fluid, highlighting the dramatic difference in color and clarity.
• The definition of a vehicle's "lifetime" is often manipulated. Manufacturers define this as a much shorter timeframe (around 150-200,000 miles) than what many consumers assume.
• Ignoring transmission fluid service can lead to premature failure. The video shows how the dark, contaminated fluid in the Lexus's transmission masked a problem that only became apparent after a fluid change.
• Independent shops are often more willing to perform necessary services. Dealerships may refuse service due to the "lifetime fluid" claim, while independent mechanics will usually perform the service.