Texas summers are relentless — triple-digit temperatures, blazing sun, and humidity combine to stress every system in your vehicle. Here's what to watch for specifically when you're driving in the Texas heat.
Cooling System: Your Engine's Lifeline
Coolant boiling point and freeze protection are equally important in Texas — you need protection at both extremes. In summer heat, make sure your coolant level is correct and the mixture is tested. Low coolant in 100°F+ ambient temperatures can cause overheating within minutes of hard driving.
Also check the radiator cap — a weak cap that can't hold pressure lowers the coolant's effective boiling point. A $10 cap check can prevent a $1,000 overheating incident.
Engine Oil
Oil thins with heat. In Texas summer driving — particularly if you're towing or driving in stop-and-go traffic — oil film strength is stressed. Ensure you're not past your oil change interval, and consider the upper end of recommended viscosity if you're in heavy summer use.
Battery
Heat kills batteries faster than cold. A battery showing under 70% capacity on a load test needs replacement before summer accelerates its failure. Parking in shade where possible reduces battery stress.
Tires
Hot pavement combined with underinflated tires is a recipe for blowouts. Check tire pressure in the morning before driving, when tires are coolest. Texas heat causes tires to wear faster — inspect tread depth regularly.
Air Filter
Texas dust and pollen are rough on air filters. If you live or drive in rural areas, inspect your air filter every 10,000 miles — don't wait for the standard 15,000–30,000-mile interval.
Keep your vehicle Texas-ready at Texan Supply — free shipping on all orders.