Improperly installed extra sound insulation in a car can set the stage for body corrosion. Experts note that when vibration-damping layers are glued directly to metal surfaces, issues can arise. If insulation in the doors is not trimmed and rolled correctly with a specialized tool, gaps may form. Those gaps can trap condensate, creating a damp environment that accelerates metal deterioration and rust over time.
Foam-based insulation compounds are another potential risk. They can trap moisture, which promotes corrosion from the inside out. In addition, adding sound insulation increases the overall vehicle weight, sometimes by as much as 100 kilograms. This added mass can extend braking distances and subtly affect handling and fuel efficiency.
Engine maintenance can also introduce unfamiliar noises if care during oil changes is rushed or incorrect. A knock after an oil change can stem from several causes: too little or too much oil, a contaminated oil pump filter, or the engine and its filters needing a brief period to reach proper lubrication after the change. In some cases, a faulty oil pump or the use of low-quality oil and filters can be at fault.
Questions about whether it is possible to refuel or refill using oils from large chain stores arise from time to time. The best practice is to follow the vehicle manufacturer’s specifications and use high-quality oil and filters from reputable brands to ensure reliable lubrication and engine longevity.