Automotive Industry

Car Talk: Tractor Hydraulic Fluid Instead Of Transmission Fluid?

Dear Car Talk: I have a question about using tractor hydraulic fluid in place of Dextron transmission fluid in my car. Do you have any opinion on whether it is a suitable substitute? Better? Worse? I have heard valid arguments in both directions. Marc A: I'm glad to see you're a guy with time on your hands, Marc. Not everybody has time to dream up such creative ways to void his warranty. I've never used tractor hydraulic fluid in a transmission. I did use it once in a salad, but that was by accident. Here are my thoughts on why it's not worth the risk: About four or five decades of research and development have gone into perfecting the molecular design of Dextron...