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🔥 Clear the smoke, own the road!
Liqui Moly1808 Diesel Smoke Stop is a powerful 150ml additive designed for all diesel engines—from passenger cars to heavy-duty commercial and agricultural vehicles. It instantly reduces exhaust smoke by accelerating soot burn-off, cleans the injection system, and optimizes emission test results, ensuring smoother engine performance and a cleaner environment.





| Manufacturer | Liqui Moly |
| Brand | Liqui Moly |
| Product Dimensions | 10 x 5 x 5 cm; 150 g |
| Item model number | 1808 |
| Manufacturer part number | 1808 |
| Item Weight | 150 g |
M**R
Refreshed old Rover MG
Cured a 155k miles 23yr old Rover MG L Series smoking at idle in only a few minutes running. Several days in and no return of smoke. It doesn't do many miles doing the school trips and always runs on Shell V Power for the supposedly claimed cleaning affect. Note I did use double the ratio i.e. whole can in 25l. Used other more expensive products in the past that have not been this impressive.
S**N
Good value
Good value
C**C
Job done
Job done
R**J
Excellent
Excellent
J**N
Great Product
Cured my diesel black smoke
A**R
Stop smoke
Not really had time to see if working in my car only put it in a day ago .
P**C
Worked perfectly
Was having excessive black smoke on acceleration. I don't like using additives but for the price I thought I'd give it a go. Did not work immediately but after approx 2 weeks and a few italian tune ups, the smoke has practically disappeared. Well worth a try.
A**R
Can’t comment
Can’t really say if it works or not as we found out it was our turbo that needs replacing
Trustpilot
1 month ago
2 weeks ago