Which Opti-Lube Diesel Fuel Additive Should I Use?

Choosing the right diesel fuel additive depends on your main concern. Some customers want one all-around additive. Others are focused on maximum lubricity, stronger cetane, cold-weather protection, or a one-time fuel system cleaning treatment.

Quick Product Guide

XPD All-Season

XPD All-Season is our most popular diesel fuel additive because it covers the widest range of needs in one product. It supports lubricity, injector cleanliness, water separation, corrosion protection, fuel stability, cetane improvement, and cold-weather performance.

XL Extreme Lubricant

XL Extreme Lubricant is the best choice when maximum lubricity is the main goal. It is popular in warm climates, older diesel engines, equipment, and applications where fuel system wear protection is the top priority.

Summer+

Summer+ is a warm-weather formula focused on lubricity, cetane, detergency, and performance. It is a good option when anti-gel protection is not needed.

Boost!

Boost! is the best option when the main goal is cetane improvement. Higher cetane can help with cold starts, smoother combustion, reduced ignition delay, and overall drivability.

Winter

Winter is designed for stronger cold-weather anti-gel protection. It should be added before fuel reaches its cloud point or begins to gel.

Single Clean and Gel Melt

Single Clean is a stronger one-tank cleaning treatment for injector deposits, smoke, rough running, or fuel system cleanliness concerns. Gel Melt is an emergency product for diesel fuel that is already gelled.

Need help choosing? Start with Opti-Lube diesel fuel additives or review our FAQ for dosing, storage, and compatibility questions.

Feeling Like Your MPG and Power Might Be Down?

If your diesel feels down on power, seems louder than normal, smokes more than usual, or has lost fuel economy, fuel system deposits may be part of the problem. They are not the only possible cause, but they are common enough to be worth considering.

Why Deposits Matter

Modern diesel injectors operate at very high pressures and use very small openings to atomize fuel. When deposits form on injector tips or inside the injector, the spray pattern can be affected. That can lead to rougher running, more smoke, reduced responsiveness, and less efficient combustion.

Where Single Clean Fits

Opti-Lube Single Clean is designed as a stronger one-tank cleaning treatment. It can be used when injector deposits, smoke, rough running, or fuel system cleanliness are the main concern. After that cleaning treatment, most customers return to a regular maintenance additive such as XPD All-Season, XL Extreme Lubricant, or Summer+.

When an Additive May Not Fix It

If the issue is caused by a mechanical problem, boost leak, air restriction, bad sensor, tuning issue, emissions-system problem, or worn component, an additive will not correct the root cause. In those cases, diagnosis and repair may be needed.

Need help choosing? Start with Opti-Lube diesel fuel additives or review our FAQ for dosing, storage, and compatibility questions.

When Should You Use Opti-Lube Single Clean?

Opti-Lube Single Clean is designed as a stronger one-tank cleanup treatment for diesel fuel injection system deposits. It can be used in modern common rail systems as well as older diesel fuel systems.

What Single Clean Is For

Single Clean is a good choice when injector deposits, rough running, smoke, loss of responsiveness, or fuel system cleanliness are the main concern. It is not meant to replace every-tank maintenance additives for all customers; it is a stronger cleaning treatment used when needed.

How It Differs From Maintenance Additives

XPD All-Season, XL Extreme Lubricant, and Summer+ are commonly used as regular maintenance additives. Single Clean is focused more specifically on cleaning. After using Single Clean, most customers return to their regular additive for ongoing lubricity, water separation, corrosion protection, cetane, and maintenance cleaning.

What to Expect

If the problem is related to fuel system deposits, a cleaning treatment may help improve operation. If the issue is mechanical, air-related, tuning-related, or emissions-system related, an additive may not resolve the root cause.

Need help choosing? Start with Opti-Lube diesel fuel additives or review our FAQ for dosing, storage, and compatibility questions.

What’s the Difference Between Opti-Lube Diesel Fuel Additives?

One of the most common questions we get is: what is the difference between your diesel fuel additives? The short answer is that each product is designed for a different need.

Quick Product Guide

XPD All-Season

XPD All-Season is our most popular diesel fuel additive because it covers the widest range of needs in one product, including lubricity, cleaning, water separation, corrosion protection, stability, cetane improvement, and cold-weather support.

XL Extreme Lubricant

XL Extreme Lubricant is the best choice when maximum lubricity is the main goal and anti-gel protection is not needed.

Summer+ and Boost!

Summer+ is a warm-weather formula with lubricity, cetane, detergency, and performance benefits. Boost! is the best choice when the main goal is maximum cetane improvement.

Winter, Single Clean, and Gel Melt

Winter is for stronger preventative cold-weather anti-gel protection. Single Clean is for stronger one-tank cleaning. Gel Melt is for emergency use when diesel fuel is already gelled.

Need help choosing? Start with Opti-Lube diesel fuel additives or review our FAQ for dosing, storage, and compatibility questions.