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The 2009 Toyota Corolla requires Dexron VI ATF as stated by the manufacturer. It is advised to service and flush the automatic transmission fluid and filter every 60,000 miles to maintain optimal transmission performance. If you frequently tow heavy loads, like a trailer with your vehicle, it is recommended to service the transmission every 45,000 miles. This maintenance is crucial to prevent gear slippage and potential damage to the transmission. Inferior transmission fluid can lead to inadequate lubrication of the gears, resulting in metal-to-metal grinding and debris in the fluid, causing further issues. The cost of transmission fluid typically ranges from $7 to $10 per quart, depending on the brand and quality.
A 2009 Toyota Corolla requires full synthetic Dexron automatic transmission fluid for optimal performance.
The transmission fluid in the 2009 Toyota Corolla is a full synthetic Dexron VI.