transmission fluid

Automatic transmission fluid (ATF) is a completely different beast than engine oil or manual transmission gear oil because it does way more than lubricate. (Want to read about gear oil? Check out this post.) Think about it. Automatic transmissions and transaxles are essentially hydraulic systems, complete with valves, check balls, solenoids, and pumps. ATF is

Q: I have a Turbo 400 transmission with a 4,000-rpm stall converter and a transmission cooler. My trouble starts when the transmission temperature gets to about 210˚ F—the transmission starts blowing fluid out of the top vent tube. Even this hot, the trans doesn’t slip and shifts just like it does when it’s cool, whether