Why weren't you in my local garage on Friday yer bugger!

I would not have advocated a full flush of the gearbox....

Gearbox Fluid is a very good detergent....currently inside the box hidden in harmless nooks and crannies is a build up of debris....harmlessly sitting out of the way doing no bother!

When you only change the sump contents during a 'normal' fluid change, you change about 65% or so of the original fluid, the rest sits in the Torque Converter.

You then refill with clean fluid - diluting the remaining 35% or so.

This dilution of the clean fluid, slows down the detergent effect.

NOW....

If you mega flush and take all the old fluid out and replace with new, it will start to strip clean the gearbox, and pull all that accumulated debris into the oil and box, which can cause grief.

It is known as New Fluid Syndrome (or something similar)....

Some get away with it, and some have reported it has trashed the box requiring a rebuild due to contamination!

The dilution method will disturb some of the harmless crud into the oil, but the second flush will start clearing this out before it has a chance to wreck everything!
 
Why weren't you in my local garage on Friday yer bugger!
:p :D

Sorry to hear of your woes....I would seek Bembles advice first, but my advice would be to drive it as little as possible and maybe drain the fluid and see if it contains horribleness....indicating the 'New Fluid Syndrome' of dislodging previously harmless crud into the box!

Bemble is, as always, the go to guy with L322 Box problems!
 
Yeah he truly is like the Oracle out of the Matrix films :p



:p :D

Sorry to hear of your woes....I would seek Bembles advice first, but my advice would be to drive it as little as possible and maybe drain the fluid and see if it contains horribleness....indicating the 'New Fluid Syndrome' of dislodging previously harmless crud into the box!

Bemble is, as always, the go to guy with L322 Box problems!
 
Just a quick update about the gearbox flush as it wasn't as drastic as I thought. When I got home the bill had arrived from the garage and basically they have changed the oil in the gearbox and replaced the box filter and gaskets. So it doesn't look like a total flush so hopefully I'll still have some friendly crud floating around :)

But the price of that ZF oil, jeez :behindsofa:
 

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