Transmission fluid should be changed every 30,000 miles. Automotive transmission fluid has hydraulic and lubrication properties as the lifeblood of your transmission. The fluid is constantly exposed to extreme heat and friction. These conditions cause the fluid to break down over time losing its viscosity and lubricating ability. . According to the Automotive Transmission Builders Association (ATRA) 90% of all transmission failures are caused by overheating and fluid contamination. Regular transmission fluid will prevent failure, improve shifting, provide cooler operation and extend transmission life.
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