1,500 Reasons to Check Your Transmission Fluid
If your vehicle is running too hot, the fluid inside your transmission can oxidize, turn brown, and start to smell like burnt toast. That intense heat will affect the fluid’s ability to lubricate.
If the fluid can’t do its job, varnish will form on the valve body and other internal parts, which will affect the transmission’s functionality. If the temperature climbs too high, the rubber seals will harden, break and allow leaks and a loss of pressure. If the clutches burn out the only repair option is a complete overhaul, which easily can cost $1,500. And those are your 1,500 reasons to check your transmission fluid regularly. The diagram below gives you an inside look at part of a vehicle's transmission.