Don’t guess the interval. Learn why manufacturers say 2–3 years, how moisture and boiling point tests reveal real fluid health, and what to ask your shop.

See what to inspect and what to replace at 30,000 miles. Learn typical costs ($150–$850) and which tests and photos to demand before you approve work.

OEM backed oil-change guidance for Van Alstyne drivers: 5,000–7,500 miles typical, 3,000–4,000 for severe use. DIY checks and ASE certified local service.

Stop a musty AC smell in home or car. Try a new filter, run the fan 5–15 minutes, flush the drain, or book a shop inspection.

Match when your AC turns warm to six likely causes: after 10–20 minutes, at idle, or randomly. Simple checks and repair costs.