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Choosing the right transmission fluid for your car is vital to prevent costly mechanical issues and to avoid expensive repairs. Transmission fluids vary significantly by type, and selecting an incorrect specification can lead to delayed engagement, overheating, اتوسرویس داوود or even total transmission breakdown. The first step is to consult your owner’s manual—it will name the approved fluid grade your car needs, often identified by a manufacturer’s code like Dexron.

Never guess or follow unverified tips from a forum post. Identify whether you have an automatic, manual, or CVT—conventional automatics demand specific fluid, while manuals may need MT-1 or SAE 75W-90, and occasionally require a specialized ATF. An increasing number of models come with CVTs, which need a special CVT fluid that is incompatible with standard ATF. Using mismatched fluids or installing an incorrect fluid can cause serious damage, so confirm compatibility.

Pay attention to whether your car requires synthetic or conventional fluid. Manufacturers increasingly recommend synthetic options because it offers superior thermal stability, lasts longer, and flows better in cold weather. Protect gears and clutches more effectively. If your owner’s manual permits conventional fluid, switching to synthetic can offer added protection, as long as it complies with OEM standards.

Verify the SAE grade and performance specs. These are usually printed on the bottle and must align with your vehicle’s needs. Ensure the fluid carries recognized industry approvals or the vehicle manufacturer. If you’re unsure, consult an authorized service center or a qualified technician who is familiar with your make and model.

Evaluate your typical driving conditions. If you frequently tow heavy loads, experience frequent idling, or face harsh weather conditions, your transmission faces increased stress and may benefit from a higher performance fluid. Some manufacturers offer extended life fluids, but they still require periodic inspection.

Choose well-known, reliable products and avoid counterfeit or cheap generic fluids. The cost of a good transmission fluid is negligible versus transmission repair costs. Never deviate from factory specs. Taking the time to choose the right fluid is among the easiest and most impactful steps to extend the life of your vehicle’s transmission.