Additives & Flushes
Engine additives and flush products for oil-system cleaning, hydraulic valve lifter treatment and cooling-system cleaning, including concentrated engine flush, full-fill flushing oil and radiator flush.
Start with the job and the way the product is used. An engine flush added before an oil change, replacement flushing oil, a treatment left in the engine oil and a radiator flush are different products, so check the product instructions, required quantity and system compatibility before use.
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Comma Engine Flush 400ml – Petrol & Diesel
Find the right additive or flush product
Additives and flushes should be selected by the system being cleaned and the condition being addressed. Some products are added to the existing engine oil shortly before draining, while flushing oil replaces the old oil during the cleaning process. Cooling-system flush is used separately before refilling with fresh antifreeze and coolant.
| Job | Best place to start | Check before ordering |
|---|---|---|
| Cleaning the oil system before a routine oil change | Ravenol Professional Engine Cleaner or Comma Engine Flush | Check the dosing quantity, engine suitability and instructions for adding the cleaner to the existing oil |
| Flushing a heavily neglected or sludged engine | Comma X-Flow Flush Out flushing oil | Flushing oil replaces the drained engine oil temporarily, so check the engine capacity and full usage instructions |
| Hydraulic valve lifter treatment | Motul Hydraulic Valve Lifter Care | Confirm that the engine uses hydraulic valve lifters and check the permitted oil capacity and dosage |
| Cleaning rust, scale and deposits from a cooling system | Mannol Radiator Flush | Allow time to drain and rinse the system before refilling with the correct antifreeze and coolant |
Check how the product is used
The products in this section are not used in the same way. Follow the instructions supplied with the individual cleaner or additive, particularly the stated dosage, circulation time and whether the product must be drained from the system after use.
Engine or cooling system
Confirm whether the product is intended for engine oil, hydraulic valve lifters or the cooling system.
Confirm whether the product is intended for engine oil, hydraulic valve lifters or the cooling system.
Additive or flushing oil
Check whether the product is added to the existing oil or temporarily replaces the drained oil during cleaning.
Check whether the product is added to the existing oil or temporarily replaces the drained oil during cleaning.
Dosage and capacity
Match the product quantity to the engine oil capacity or cooling-system capacity stated in the instructions.
Match the product quantity to the engine oil capacity or cooling-system capacity stated in the instructions.
Fresh fluid afterwards
Engine and radiator flush products must be followed by the correct fresh engine oil or antifreeze and coolant.
Engine and radiator flush products must be followed by the correct fresh engine oil or antifreeze and coolant.
Compare additives and flush products
| Product type | How it is used | Main distinction |
|---|---|---|
| Engine flush additive | Added to the existing warm engine oil before the old oil is drained | Concentrated cleaner intended for use immediately before an oil and filter change |
| Full-fill flushing oil | Used after draining the old oil, then drained before the engine is filled with fresh oil | Provides a complete temporary oil fill for cleaning more neglected engines |
| Hydraulic valve lifter additive | Added to the engine oil in accordance with the product instructions | Intended for engines using hydraulic valve lifters rather than as a general engine flush |
| Radiator and cooling-system flush | Circulated through the cooling system before draining, rinsing and refilling | Designed for rust, scale and cooling-system deposits rather than engine oil contamination |
Related servicing sections
| Section | Use it for |
|---|---|
| Land Rover engine oil | Fresh engine oil for refilling after an engine flush or flushing-oil treatment |
| Land Rover antifreeze and coolant | Fresh coolant concentrate for refilling after cooling-system cleaning |
| Land Rover service kits | Oil filters, fuel filters, air filters, sump washers and engine-specific servicing parts |
| Workshop consumables and chemicals | Cleaning products, lubricants, maintenance chemicals and workshop consumables |
| Land Rover oils and fluids | Engine oil, gear oil, ATF, coolant, brake fluid, grease and other service fluids |
