Why Texas counts as 'severe service'
Most owner's manuals have two schedules: normal and severe. Extreme heat, stop-and-go traffic, short trips, dusty roads, and towing all qualify as severe — and most Texas drivers hit several of those daily.
Following the severe schedule costs a little more each year but dramatically extends the life of your engine and transmission.
Every 5,000–7,500 miles
Oil and filter change (synthetic), tire rotation, and a multi-point inspection of fluids, belts, hoses, and brakes.
Every 15,000–30,000 miles
Engine air filter, cabin air filter, wiper blades, and a brake inspection. In dusty West and Central Texas, air filters may need changing even sooner.
Every 60,000 miles
Transmission fluid service, coolant flush, spark plugs (on many vehicles), brake fluid flush, and serpentine belt inspection or replacement.
Every 90,000–105,000 miles
Timing belt replacement where applicable, water pump (often done at the same time), and a thorough suspension and steering inspection.
Batteries and tires
Test your battery every spring — Texas heat shortens battery life to around three years. Check tire pressure monthly; heat raises pressure and underinflation increases blowout risk on hot pavement.