The 5 Best Diesel Engine conditioners (2023 reviews)

It is important to have the well suited diesel engine conditioner. In the following post, we will help you to select the best diesel engine conditioners.

Our review process: Show/Hide

Our Top Picks:

Stanadyne Diesel Engine conditioner Buy: READ REVIEW

ATP automotive Diesel Engine conditioner Buy: READ REVIEW

Lucas Oil Diesel Engine conditioner Buy: READ REVIEW

renewable lubricants Diesel Engine conditioner Buy: READ REVIEW

XADO Diesel Engine conditioner Buy: READ REVIEW

Stanadyne Diesel Engine conditioner

Buy on Amazon

Not everyone likes to purchase conditioner for their regular usage, but the stanadyne diesel engine conditioner would be an anomoly. It is the best diesel fuel additive for your volkswagen or your duramax. The detergency and cetane improver in Performance Formula will help restore your fuel economy, plus increase horsepower and torque. It protects against formations of gums caused by oxidation. There is a section on the entire side of the bottle that allows you to see how much fluid is left.

The cetane level increases up to 10% depending on the level of the base fuel. It will last 12 months and it stores in the garage without deterioration. It is recommended to be used every time you fill up, 1/4 bottle per 15 gallons of fuel. It is great in the winter to keep the fuel from gelling.

• Keeping your tank full over night is a good first step
• Proven to perform best in independent tests
• Developed by a fuel injection systems manufacturer
• Great stuff for keeping injectors lubed and diesel fuel flowing

ATP automotive Diesel Engine conditioner

Buy on Amazon

The atp automotive diesel engine conditioner is capable of outshining several other conditioner featured in this list in overall features in its price range. It is a plasticizer, a type of chemical used in rubber manufacturing to set hardness and flexibility. It will not repair rope seals, cut seals, or cracked seals. Using it is simplicity itself and the following addresses an engine oil leak even though this product will also mix with your transmission, brake, and power steering fluids. It works fantastic in transmission.

It comes with oil in the system and is circulated throughout during operation, treating and conditioning rubber seals and gaskets. The premise is that it slightly swells rubber seals so it's a great universal additive for all sorts of applications. It will save you hundreds or thousands or dollars compared to pulling your engine or tranny.

• More daily drips of oil from the rear main seal
• Good brand reputation

Lucas Oil Diesel Engine conditioner

Buy on Amazon

Next on the list, we've got yet another conditioner that manages to win our hearts. It's the lucas oil diesel engine conditioner and it's widely considered as conditioner that has the most suitable features. If you live in an area with higher humidity and you want to run E-85 in any engine, this product and any "marine" fuel treatment like Sta-Bil's 360 Marine are great at preventing fuel separation and corrosion damage with your injectors. It comes with stabilizers developed to specifically address issues associated with using ethanol based fuels. It is good for use in classic cars that are alergic to ethanol.

This is a Fuel Additive for Moisture and to Nutrualize the effects of Ethanol preserving the rubber components in your engine and fuel system. It is great for keeping the ethanol from separating with the gas. The on board generator really appreciates this additive as well.

• Lot of satisfied buyers
• Good brand reputation

renewable lubricants Diesel Engine conditioner

Buy on Amazon

The renewable lubricants diesel engine conditioner is capable of outshining several other conditioner featured in this list in overall features in its price range. It is a soy-based diesel fuel conditioner formulated to improve fuel economy and power, and overcome the known problems associated with today's fuel. It maintains power, minimizes crankcase oil dilution, and supplements upper cylinders and valve train with anti-wear protection.

• Good investment for long term
• Delivers what they promise

XADO Diesel Engine conditioner

Buy on Amazon

Compared with other conditioner in this category, the xado diesel engine conditioner has a convenient design. It is specially designed for turbocharged diesel engines (shpd — super high performance diesel, uhpd — ultra high performance diesel) and is used for their active protection by high-speed and loaded modes of operation. The Complex Metal conditioner strengthens the lubricating oil film and reduces friction losses, thus increasing the engine power and acceleration capability.

• Creates and active system for protection of parts from loads and overheating
• Compensates the ongoing wear of friction parts
• Atomic metal conditioner for diesel engines of trucks
• Improves the lubricating properties of oil and tribological characteristics of engine assemblies