Ask any San Antonio driver about July on Loop 410 and you will hear one word: brutal. But the heat baking your dashboard is doing far worse damage underneath your vehicle — and your transmission is paying the price.

Why Heat Kills Transmissions Transmission fluid is rated by temperature. At 175°F, it lasts roughly 100,000 miles. At 220°F, that lifespan is cut in half. Sit in traffic on Walzem Rd. with the AC blasting in 100° heat, and your transmission can climb past 240° in minutes.

When fluid breaks down, it stops protecting the clutches and seals that keep your transmission shifting clean. Warning signs are subtle — a delayed shift, a slight shudder, a faint burnt smell. Most drivers ignore them.

They should not.

Catch It Before It Costs You

A transmission fluid service is one of the cheapest repairs your vehicle will ever need. A full rebuild is one of the most expensive. The math is simple. If you commute, tow, or notice anything off in your shifts, bring it to Sergeant Clutch at 6557 Walzem Rd. Call (210) 239-1600 today.