Search Button


Account Button


Basket Button

Basket Basket

Search Suggestions



View All Results

Apple Ipad Competition
Millers Oils Engine Flush Fully Synthetic Engine Oil Treatment

Millers Oils Engine Flush Fully Synthetic Engine Oil Treatment


Millers Engine Oil Flush - 250ml



Checking Stock



Add To Basket

  • Description
  • Benefits
  • Specifications
  • Shipping Explained

Millers Oils Engine Flush Fully Synthetic Engine Oil Treatment

Millers Oils Engine Flush is a light oil-based, solvent-free product that contains a high detergency package. Adding this detergent to the engine oil's existing detergency package boosts the oil's cleaning potential. This will result in the flushing out of any debris that has built up in the engine. Millers' solvent-free Engine Flush will carry the debris to the oil filter to maximize engine cleanliness ready for the fresh oil and filter.
Millers Oils have formulated their Engine Flush to be solvent-free. Solvent-based products can be aggressive and can change the composition of seals i.e. soften/relax rubber seals leading to possible leaks. Solvents can also dilute the oil and cause the viscosity to go out of spec, potentially thinning the oil, therefore not providing effective protection when the flush process is underway.

A fully synthetic oil-based flush with advanced additives which cleans oil ways. It cleans and protects the engine by efficiently removing sludge and deposits from the engine.

Ideal for all cars and light commercial vehicles, for both petrol and diesel engines.


Add the contents of the bottle to oil in the engine – 250ml bottle will treat 4-6 litres of engine oil. Run engine for 15 to 20 minutes. Drain the oil, change the oil filter and refill with the recommended grade of engine oil.

  • Use before an oil change
  • Add contents of bottle to oil in engine
  • Idle the engine for 15-20 minutes
  • Drain the oil, renew the filter and refill with the recommended grade of Millers Oils engine oil
  • Use only with Millers Oils treatments

PDF Downloads:

Download the Technical PDFDownload the Safety PDF


  • Ensures engine is clean before new oil is put into engine so new oil has maximum service life
  • Ideal for all cars and light commercial vehicles, for both petrol and diesel engines
  • Fully compatible with all engine oils
  • Safely cleans lacquer, varnish, dissolves sludge and insoluble deposits
  • Frees sticking VVT systems, HVL's and piston rings
  • Ensures oil flow to critical moving parts by cleaning oil ways
  • By providing anti wear protection it maintains and protects the engine
  • Neutralises crankcase acids


  • Store at ambient temperature and avoid direct sunlight
  • Product efficacy within 24 months of date on bottle if stored according to manufacturer's instructions


SHIPPING IS FREE* for orders of £75 and over , regardless of the weight of your order.
We've tried to keep all other shipping costs as low as we can.

Carriage starts at just £0.95 (inc VAT) for small items, with our most common courier rate set at £5.99 for orders of 5kg (enough for 5 litres of oil).

  • *Free shipping is available for UK Royal Mail, UPS Access Point™ (click & collect) and standard UK courier services (not express / priority / islands).
  • Courier surcharges mean we are unable to offer free "to the door" courier shipping from us in Cornwall up to Highlands / Grampian in Scotland - and because we send a lot of liquids, not every courier option is available to us. UPS Access Point™ (click & collect) is available as a free shipping option across Scotland, Wales and England, wherever there is a UPS Access Point™ Location.
  • Carriage charges are based on weight - please see our table of carriage costs for full details (although adding an item to your cart and viewing the calculated carriage is often easier!).
  • Priority shipping is also available.

How long will it take to get my order?

We give an estimate of delivery dates as you shop and in your basket. The vast majority of items are held in stock and dispatched from our UK warehouse and we'll do all we can to get your order to you as quickly as possible.

Share this product:

Find Oils & Parts

Use Our Product Lookup

We say...

"High quality detergent based flush"

Review Opie Oils

Review Stars

Rated Excellent