Quote:
Originally Posted by sef6
Even if the sludge accumulation is normal and it's presence does no harm, and changing the fluid is a waste of time, I enjoyed doing it and I like the self-satisfaction of having done it myself.
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The grey sludge has a mix of iron metal particles,that is what causes it to stick to the factory magnetic drain and fill plugs. It is a good idea to get all that out after break-in, especially if keeping the vehicle very long term; should help the input and output shaft seals last longer (lower chance of leaks); posi traction mechanism, bearing, and gear wear reduction is also a benefit.
Ron