Automatic Servicing


Regular automatic transmission servicing is essential to help prolong the life of your transmission and keep it at its best.

Automatic Servicing

Transmission fluid has changed so much in the last twenty years and is nowadays a critical component for the performance of your transmission.

We recommend either having a traditional service done this involves removing the transmission sump and replacing the filter, this process normally allows 5-6 litres to be drained from the system. We then refill with the correct fluid. Please note on some models the internal filter is not accessible without stripping the whole transmission.

We also offer a 100% oil change which is becoming more and more popular. We can only do this if we are able to gain access to the transmission’s cooler lines. On some models this can be a bit of a challenge!!!

Oil wear can cause issues such as harsh shifts, juddering and noises.

We recommend this service is done at every 60,000 miles or at three years to maintain peak performance from your transmission.

ZF recommends oil changes after 50,000 miles and Mercedes recommend 72,000 miles for their 7G transmission.

We normally need your car for the morning to carry out this type of work. Please call to discuss your requirements and we will gladly help.

Oil draining from ZF6HP26 which had covered 80,000 miles

View of 6R80E with sump removed

Removing ZF6HP26 sump assembly

Installing new filter

Debris found in sump

Sump pan is then refitted with new gasket

Buy Online

Our online shop makes it easy to order gearbox transmission units and parts.

– Wide range of popular products available

– Excellent advice from trained members of our sales team

– Secure online ordering

– Fast delivery to your door



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Our Distributors

We have a selection of dealers throughout the UK and Europe who stock our products.


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“Very professional garage, I always had clear information about the process and fault and price. Even after service without any problem they answered all my questions. Big thanks for Simon. I will always comeback to you if I have to. Thank you.”

“Repaired my Freelander at 2/3 the cost of main dealer AND gave 12 months warranty on the work. Would use again”

“Really professional, great service. Extremely friendly staff. Basically, a real pleasure to deal with. One extremely happy customer”

“Really good fast service and polite which is refreshing.... well done keep it up”

Get In Touch

0117 952 4920


Bristol Transmissions Ltd
Unit 3,4 & 5, McArthur Buildings
Foundry Lane, Fishponds, Bristol,


Mon:8am - 5pm
Tue: 8am - 5pm
Wed: 8am - 5pm
Thur: 8am - 5pm
Fri: 8am - 5pm
Sat: Closed
Sun: Closed

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