






⛽ Drive cleaner, drive smarter — fuel your engine’s future today!
Lucas Oil 10003 Upper Cylinder Lubrication & Injector Cleaner is a 32oz premium additive designed to enhance fuel mileage, increase engine power, and reduce emissions by promoting complete combustion. It protects against rust and corrosion, helps maintain a clean fuel system, and supports passing smog tests. Recommended for use every 3,000 miles, it’s a trusted choice with a 4.7-star rating and top rankings in automotive additives.

| ASIN | B000ARPVOI |
| Best Sellers Rank | #6,207 in Automotive ( See Top 100 in Automotive ) #69 in Oil & Fluid Additives |
| Brand | Lucas Oil |
| Customer Reviews | 4.7 4.7 out of 5 stars (6,530) |
| Date First Available | 7 August 2012 |
| Item Weight | 898 g |
| Item model number | LUC10003 |
| Manufacturer | Lucas Oil Products Inc |
| Manufacturer Part Number | 10003 |
| OEM Part Number | 10003 |
| Product Dimensions | 8.38 x 8.38 x 8.38 cm; 898 g |
T**D
لاحظت عند استعماله فعلا انخفاض صرف البترول ولكن بعد ان ينتهى المحتوى من الخزان يرجع التحسن الى الاستهلاك مثل الاول مع فرق بسيط لا يذكر
A**I
Genuine
Genuine product & the best
M**3
ممتاز
S**N
GOOD PRODUCT
Delivery so fast. Thanks
S**.
.
Didn’t work, couldn’t feel any difference
C**N
buen producto, lo utilizo varias veces al año y se nota en el rendimiento del motor, vendedor de 10, envio rapido
V**E
I recently tried out the Lucas Oil 10003 Fuel Treatment in my car, and I'm happy with the results. I noticed a smoother engine performance and improved fuel efficiency. I use it during long drives, and it has been quite handy. Plus, it's wallet-friendly. Oh, and the freezing temperature in my apartment didn't bother me while pouring it into my tank. Overall, a good buy for maintaining my vehicle's health.
M**R
It improves well, always trust lucas products 👏
G**W
A good UCL for both petrol and diesel.
P**Z
I do quite a lot of stop start driving, the engine rarely gets a proper blow out, plus I use supermarket fuels which tend to be cheaper but have less additives than brands. This additive compensates for the ‘negative’ factors and is resulting in mpg figures of around 7% better than officially published, which is amazing. I think it works.
Trustpilot
4 days ago
5 days ago