2000 Audi 100 WHY WE CHANGE TRANSMISSION FLUID?

At elevated operating temperatures, the tranny fluid oxidizes, turns brown and takes on a smell like burnt toast. As heat destroys the fluid's lubricating qualities and friction characteristics, varnish begins to form on internal parts (such as the valve body) which interferes with the operation of the transmission. If the temperature gets above 250 degrees F, rubber seals begin to harden, which leads to leaks and pressure losses. At higher temperatures the transmission begins to slip, which only aggravates overheating even more. Eventually the clutches burn out and the transmission calls it quits. The only way to repair the damage now is with an overhaul. I would rather pay a few bucks for a tranny fluid replacement then to pay that hefty overhaul charge.

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Hi there,

All oils break down and become less efficient at lubrication under pressure and heat absorption, spent clutch material and other worn materials are held in suspension in the oil so this is also a good reason to service the transmission periodically.

Mark (mhpautos)