Overview
MOTUL Engine Clean Kit Diesel is a two-part maintenance set designed to thoroughly clean the lubrication system of diesel engines. Part number: 112328. The kit includes an Engine Flush (300ml) to clean the oil circuit before a drain, combined with a Diesel System Clean additive (300ml) for the fuel system, working together to remove harmful deposits, restore engine performance, and reduce exhaust emissions.
Key Features
- Complete engine and fuel system cleaning for diesel vehicles
- Engine Flush evacuates deposits, varnishes, and combustion residues from sensitive areas including hydraulic lifters and piston grooves
- Helps restore cylinder compression across all cylinders
- Reduces wear, oil consumption, and fuel consumption
- Decreases harmful exhaust pollutant emissions
- Extends the lifetime of catalytic converters and Diesel Particulate Filters (DPF)
Compatibility
- All types of diesel engines — naturally aspirated or turbocharged
- Engines with or without after-treatment systems including DPF and catalytic converters
- Compatible with all types of diesel fuels and biodiesels
What's Included
- 1 x MOTUL Engine Flush (300ml)
- 1 x MOTUL Diesel System Clean (300ml)
Installation Notes
- Engine Flush: add to hot used oil before an oil change, run the engine at idle for 15 minutes, then drain and replace the oil filter
- One 300ml bottle of Engine Flush is sufficient for oil capacity up to 5 litres — for higher capacities, add 60ml per additional litre
- Diesel System Clean: pour directly into the fuel tank before refuelling
Unless explicitly stated otherwise, all products sold by R44 Performance Limited are designated RACE ONLY and are solely for competition or off-road use limited to racing formally sanctioned by a recognized racing organization. Any other use, including recreational off-road use, may violate local, state, and Federal laws. R44 Performance Limited does not implicitly or explicitly confirm the legality of using any products it sells on public roads; that is entirely the responsibility of the consumer.
It is the responsibility of the customer to check with all federal, state local and environmental laws before ordering and installing a product. R44 Performance Limited is not responsible for any fees, fines or costs that a customer may incur as a result of failing to check with federal, state, local or environmental laws before ordering and installing a product.
We get a large number of custom orders and requests everyday, so as a result it is not always possible for us to keep every item in stock at all times in our warehouse. If you require the item urgently please contact our sales team here to check the stock before you make your purchase.
We totally understand if you're not certain a part will be compatible with your car, so we highly recommend contacting us here with your query. Our friendly sales team will then be in touch to confirm if this part is the correct part you are looking for.
All in stock products ship the same day if ordered before 2pm GMT
For out of stock items we will contact you with an estimated wait time if not otherwise specified above.
We offer worldwide shipping on all products. If upon receiving your product you wish to return; we offer a 30-day returns policy. For our in-depth returns information please follow the link. "R44 Returns Policy
All of our products come with a standard warranty of 1-3 years. This is dependant on the type of product however. For more details please see our warranty page here.
PLEASE NOTE
- Orders with both in-stock and backorder or out-of-stock products will be dispatched once all products are available to ship together.
- Contact our sales team if you want your parts fitted to your vehicle at our London workshop.
- Shipping estimates are based on courier delivery times and don't include time to despatch from our warehouse.

