Dynamic gearbox fluid exchange in Milton Keynes
Our machine connects into the gearbox's cooler circuit and swaps the old fluid for new, litre for litre, until what comes out is as clean as what goes in — torque converter and cooler included. From £799, usually about 2½ to 3 hours, at our workshop in Bletchley, Milton Keynes.
Send the registration and we confirm the gearbox, the fluid and a fixed price in writing before we start.
Quick answer
Rootes Motors in Bletchley, Milton Keynes (MK2 2PF) does dynamic gearbox fluid exchanges from £799, priced to your car. Our machine renews nearly all of the automatic gearbox fluid, torque converter included, with a new pan and filter where fitted. It takes about 2½ to 3 hours; most cars are ready the same day.
Nearly all the fluid, not half
An ordinary gearbox oil change renews only what drains out of the pan, often around half; the rest stays in the torque converter and cooler. The dynamic exchange renews nearly all of it. It is everything in our static service (from £399), plus the machine. Our general advice is to have it done around every 60,000 miles on average, or now if nobody knows when it was last done.
Why it matters, how the machine works and what the gearbox makers say: our full guide to the dynamic transmission fluid exchange.
Which gearboxes suit it
- ZF 8HP eight-speedDynamic exchange
- BMW since 2010, Jaguar, Land Rover, larger Audis, Alfa Romeo, Maserati, GR Supra
- ZF 6HP six-speedDynamic exchange
- BMW E-series, Jaguar XF/XJ/XK, Range Rover L322 and Sport, Discovery 3 and 4
- Mercedes 7G-Tronic and 9G-TronicDynamic exchange
- Rear- and four-wheel-drive Mercedes cars, SUVs and vans
- Aisin six- and eight-speedDynamic exchange
- Toyota, Lexus, Volvo, Mini and others
- VW Group DSG and S tronicUsually the static service
- Dual-clutch Golf, Audi, SEAT and Škoda automatics
- CVTUsually the static service
- Nissan, Subaru Lineartronic, Toyota, Honda
Not sure which gearbox your car has? Send us the registration and we check it from the VIN.
How we do it
- Check the car. Read the gearbox fault codes, look at the old fluid and road-test the car on live data.
- New pan and filter. Renew the sump pan and filter where your gearbox has them, with new seals.
- Connect the machine. Connect our machine into the gearbox's cooler pipes, primed first with your gearbox's own fluid.
- Exchange the fluid. With the engine running, swap old fluid for new litre for litre, with the fluid your gearbox takes by part number.
- Set the level hot. Set the level at the temperature the gearbox maker specifies, read from live data.
- Reset and road-test. Reset the learned settings where needed, road-test again and check for leaks.
- Report back. Tell you what we found and email you the record, with the next gearbox service noted against your car.
Areas we cover
We are at Unit 7 Rootes Works, Tavistock Street, Bletchley, Milton Keynes MK2 2PF. Customers bring their cars to us for gearbox fluid exchanges from across Milton Keynes and the towns around it.
- Bletchleyabout 5 min · 1 mile
- Central Milton Keynesabout 10 min · 4.5 miles
- Woburn Sandsabout 10 min · 4.5 miles
- Newport Pagnellabout 15 min · 8 miles
- Leighton Buzzardabout 15 min · 8 miles
- Buckinghamabout 20 min · 13 miles
Drive times from our workshop in free-flowing traffic, rounded up.
The Rootes Standard
What you get on every job
Not extras, and not only on the big jobs. This is how every car is looked after at Rootes Motors, from an oil service to a gearbox.
Fixed price in writing before we start
You get a fixed price in writing before any work begins. If we find anything else, we send you photos and a link to approve or decline it — nothing extra is done without your yes.
12-month warranty on parts we supply
12-month warranty on parts we supply (wear items and consumables excluded), and every job is road-tested and checked before handover.
Covers on, clean overalls, every car
A seat cover, steering-wheel cover and floor mat go into every car before we touch it, and we work in clean overalls — never in a customer's car in dirty clothes.
A warm, dry waiting room with coffee
On a while-you-wait job you sit in a warm, dry waiting room with a coffee — not stood outside in the cold and rain.
Paperless, with every job on record
Booking is paperless. Every job is recorded against your car, and we email you the documents confirming the work completed.
Automatic service and MOT reminders
Every registered customer gets automatic service and MOT reminders by email, so a due date never slips past.
MOT arranged on our street
We arrange your MOT at the DVSA-approved test centre on our street, take the car there and back, and fix anything that fails.
Questions we get asked
How much is a gearbox fluid exchange in Milton Keynes?
At Rootes Motors a dynamic fluid exchange is from £799 and a static service (drain and fill) from £399. Most cars are priced individually, because the fluid, how much the gearbox holds, the pan and filter and the access all differ. Send us your registration and we confirm a fixed price in writing before any work starts.
How long does it take?
Usually about 2½ to 3 hours of work. Most cars are ready the same day, and we give you a time when you book.
Is a fluid exchange better than an ordinary gearbox oil change?
An ordinary oil change only renews what drains out of the pan, often around half. The rest stays in the torque converter and cooler and mixes with the new fluid. The dynamic exchange renews nearly all of it. On a gearbox serviced on time, the static service can be enough — we tell you which your car needs, and why.
Which cars can have it?
Conventional torque-converter automatics: ZF 8HP and 6HP (BMW, Jaguar, Land Rover and others), Mercedes 7G-Tronic and 9G-Tronic, and Aisin automatics (Toyota, Lexus, Volvo, Mini and others). Dual-clutch gearboxes such as the VW Group DSG, and CVTs, usually get the static service instead.
How often should the gearbox fluid be changed?
Our general advice is around every 60,000 miles on average, sooner if the car tows, does lots of short trips or works hard. If your handbook gives a figure, we follow it. With an unknown history, treat it as due now.
Will it fix a gearbox fault?
Fresh fluid often helps slow, harsh or slurred changes caused by old fluid, but it will not fix a failed sensor or a mechanical fault. We read the fault codes and road-test the car first and tell you what we find before anything is done.
Where are you, and which areas do you cover?
We are at Unit 7 Rootes Works, Tavistock Street, Bletchley, Milton Keynes MK2 2PF. Customers come from across Milton Keynes and from Leighton Buzzard, Buckingham, Newport Pagnell and Woburn Sands — all within about 20 minutes' drive.