






⚡ Unlock your engine’s hidden potential with Mannol Motor Doctor!
Mannol 300ml Motor Doctor is a cutting-edge multifunctional engine oil additive designed to stabilize viscosity, restore oil pressure, and reduce oil consumption in high-mileage petrol and diesel engines. Its advanced anti-wear formula extends engine life, improves cold start performance, and is compatible with all oil types, making it an essential upgrade for professionals seeking peak engine efficiency and longevity.






| ASIN | B00ZPO6UFK |
| Best Sellers Rank | 64,211 in Automotive ( See Top 100 in Automotive ) 577 in Car Engine Oils |
| Brand | MANNOL |
| Brand Name | MANNOL |
| Container Type | Tin |
| Customer Reviews | 4.5 out of 5 stars 206 Reviews |
| Item Form | Oil |
| Item Weight | 308 Grams |
| Item weight | 308 Grams |
| Liquid Volume | 300 Millilitres |
| Liquid volume | 300 Millilitres |
| Manufacturer | MANNOL |
| Material | Mineral-based |
| Package information | Tin |
| Recommended Uses For Product | Increase Efficiency |
| Recommended uses for product | Increase Efficiency |
| Specific Uses For Product | Increase Efficiency |
| Unit Count | 300.0 millilitre(s) |
J**R
Better than advertised,brilliant.
Just like the Mannol diesel (fuel) additive,the product is brilliant.Added to sump oil in a 1.6 hdi Peugeot engine of around 87000 vintage,the immediate difference was impressive,engine was smooth before but even quieter with the Mannol additive.Rgarding ratio I just introduced it with a 3.5 litre oil change,(total fluid including filter) and 1600 miles later the oil is noticeably clearer than before,ie not blackening within the first 100 miles post-change.Before the oil change I used Mannol engine flush as it's the only one you can safely drive for around 50 miles while it's in circulation,and that certainly left the engine interior very clean prior to renewing sump oil.Possibly due to using these Mannol products,I'm not certain,but in the 5 years I've had my car ,mostly urban runs,traffic etc with little motorway use,it's averaged 40mpg at best,38mpg mostly,and that was on premium/regular diesel mixed,but since feeding it's systems with the Mannol diet that mileage has shot up to a sustained 50+ mpg,and that's with heavy trailer use,town runs etc,absolutely brilliant stuff,I would recommend Mannol to anyone,especially at the Amazon prices and delivery etc.
M**R
Great Stuff
Great stuff,does what it says on the tin
T**Y
Good quality.
Very good product will use it again.
B**3
Use it when your old engine really worn
when your engine happened white smoking,this will help ,but if not,don't use this as it is very thick oil additive may doing harm to oil passage and piston ring when your car still very good condition.That is for highly worn piton ring.
J**R
Lack of gas
Bought 2 and both add low pressure for the spray and one of the even finish the gas with a lot on the can . These things should be loaded with ozone gas cause it last more and you can fill more product with it
Trustpilot
5 days ago
2 days ago