What kind of transmission fluid goes in a 4l60e?
A 4L60E transmission primarily requires DEXRON-III automatic transmission fluid. However, General Motors superseded DEXRON-III with DEXRON-VI, which is fully backward compatible and often the recommended fluid. DEXRON-VI offers improved performance, durability, and better cold-weather shifting characteristics, making it the preferred choice for optimal function and extended lifespan in 4L60E units today.