My car only has a ten gallon tank. Would it be safe to add the whole bottle?

You can use the whole bottle, or make it go farther buy using half a bottle and two full tanks of gas

Does it work in diesels?

I would contact the company & ask them. Here is the link to their contact information: https://lucasoil.com/contact

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Lucas Oil 10669 Deep Clean Fuel System Cleaner - 5.25 oz.

Product ID: 372248585

Details

Brand
Lucas Oil
Contains Liquid Contents
Yes
Global Trade Identification Number
Item Volume
155
Item Weight
127 Grams
Manufacturer
LUCAS OIL

⛽5.25 oz precision dose

🔥68°C flash point safety

🇺🇸Made in USA quality

€ 34.81

Duties & taxes included

In stock

Sold byAmazon GreeceDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⛽ Clean fuel, cleaner ride — don’t let your engine miss out!

HIGH SAFETY STANDARD - Flash point at 68°C guarantees safe handling and storage.
TOP RATED BY DRIVERS - 4.7-star rating from 585+ users proves real-world effectiveness and satisfaction.
PRECISION 5 25 OZ BOTTLE - Perfectly sized for targeted, vehicle-specific fuel system maintenance.
ENGINE OPTIMIZED FUEL CLEANING - Deep cleans fuel injectors and combustion chambers for peak performance.
TRUSTED AMERICAN CRAFTSMANSHIP - Proudly made in the USA, ensuring premium quality and reliability.

Lucas Oil 10669 Deep Clean Fuel System Cleaner is a 5.25 oz liquid formula designed to remove deposits from fuel injectors and combustion chambers, enhancing engine efficiency and performance. Made in the USA with a safe 68°C flash point, it’s a trusted choice with a 4.7-star rating from over 585 customers.

Specifications

Asin	B006U5SAI8
Best Sellers Rank	#102,293 in Car & Motorbike (See Top 100 in Car & Motorbike) #361 in Engine Oils for Cars
Brand Name	Lucas Oil
Container Type	Bottle
Contains Liquid Contents	Yes
Country Of Origin	USA
Customer Reviews	4.7 4.7 out of 5 stars (585) 4.7 out of 5 stars
Global Trade Identification Number	00049807106690
Included Components	Deep Clean/24x1/ 5.25 Ounce
Item Type Name	Deep Clean/24x1/ 5.25 Ounce
Item Volume	155 Millilitres
Item Weight	127 Grams
Manufacturer	LUCAS OIL
Model Number	10669
Number Of Items	1
Part Number	40669
Size	1 count (Pack of 1)
Unit Count	1.0 Count
Upc	049807406691

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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