Four Wheel Logic

Yes, Costco includes tire installation in the member tire price, so mounting, balancing, and lifetime services do not add a separate labor fee.

Yes, coolant goes in the radiator, but many cars use a pressurized expansion tank, so you usually fill the reservoir when the engine is cold.

Yes, coolant goes bad as additives deplete, which cuts corrosion protection and raises the chance of overheating.

Yes, coolant can expire as corrosion inhibitors break down, so storage time and service intervals matter for engine protection.

Coolant color itself does not control protection, so always match the coolant type and spec in your owner’s manual instead of trusting the dye.

Yes, cold weather makes tire pressure drop about 1–2 PSI per 10 degrees, so you need checks and top-ups to keep handling and tire wear safe.

Yes, cold weather slows battery chemistry and lowers cranking power, so weak car batteries often fail first on freezing mornings.

No, a cold air intake rarely raises mpg in a noticeable way; gains stay small and depend on driving style, tuning, and the health of the engine.

No, a cold air intake rarely improves MPG noticeably; most drivers see little to no fuel economy change compared with a healthy stock intake.

Yes, every Mercedes-AMG CLS63 uses an electronic parking brake system that links a foot pedal or switch to an electric rear brake actuator.