If you are looking for a good garage we at Liqui Moly highly recommend and endorse
the Good Garage Guide

Reduces CO and HC emissions and optimises the values before the exhaust-emission check. Successfully tested in accordance with international standard CEC test-bench trials. Eliminates: cold-start problems, uneven idling, poor throttle response, performance losses, lean surging and high pollutant values.
Items currently in stock: 30
Price: £11.75 inc vat
View Product Safety Sheet View Product Tech Data SheetBuy 6 cans of Pro-Line Petrol System Cleaner for £48.00
Customers who purchased Pro-Line Petrol System Cleaner also bought Oil-Sludge Remover
Extended periods between oil changes, lower oil capacities, deficient fuel quality, lean-burn engines -- and therefore increased nitrogen oxides -- all contribute to sludge formation in the engine.
Price: £11.50
Acceleration treatment
£4.59
Ceramic Engine treatment
£18.99
Clean Sensitive Air Flow Components
£8.81
High Quality Wax & Polish
£9.99
Diesel Engine Cleaning Treatment
£7.14