Opti-Lube XPD All-Season Diesel Fuel Additive 8oz 12-Pack - Fuel Saver

In this review the Opti-Lube XPD All-Season Diesel Fuel Additive is assessed as a practical maintenance product for owners of trucks, tractors, and diesel equipment who want improved lubricity and more reliable year-round operation. The single biggest reason to consider it is its combination of injector lubrication and performance benefits - it boosts cetane, helps clean injectors, and doubles typical diesel storage life while treating up to 32 gallons per 8oz bottle. The 12-bottle case is aimed at regular users who prefer to keep a supply on hand.

Key Features

• Increases lubricity: Formulated to restore and enhance lubrication in ultra-low-sulfur diesel so injectors and moving fuel-system parts experience less wear.
• Improves fuel economy: The XPD formula has been reported to improve mileage year round, giving drivers better fuel efficiency in both summer and winter conditions.
• Cleans injectors: The additive helps remove residue and reduce deposit formation, which supports smoother injector operation and lower emissions buildup.
• Boosts performance: Raises cetane by up to 3 points and acts as a demulsifier to separate water from fuel, which aids starting and combustion consistency.
• Corrosion prevention: Contains rust and corrosion inhibitors to protect fuel-system components during use and storage.
• Convenient dosing: Each 8oz bottle treats up to 32 gallons of diesel, making the 12-pack suitable for fleet service or seasonal maintenance.

Who It's For

This product is best for truck owners, farmers, fleet managers, and diesel equipment operators who perform routine maintenance and want a single additive that addresses lubrication, injector cleanliness, and fuel stability. The 12-pack case suits users who service multiple vehicles or prefer to keep spare bottles for seasonal treatment and long-term storage.

Owners seeking a single-dose, inexpensive remedy for a specific engine fault should look elsewhere; this is a preventative and maintenance additive, not a guaranteed fix for damaged injectors or mechanical failures. Users should also follow bottle directions for correct dosing rather than relying on guesswork.

Pros & Cons

Pros

• Improves engine smoothness and lowers noise level by enhancing injector lubrication and combustion quality.
• Helps maintain injector balance and reduces deposits, supporting long-term fuel-system health.
• Offers fuel economy benefits and a modest cetane boost that can improve power and drivability.
• Extends storage life of diesel and combats water contamination as a demulsifier.

Cons

• Some users report mixed results on fuel mileage, so gains may vary by engine and driving conditions.
• Sold in 8oz bottles that require correct dosing; improper use reduces benefit.

Specifications

Product name	Opti-Lube XPD All-Season Diesel Fuel Additive
Pack size	12 bottles (8oz each)
Treatment rate	1 bottle treats up to 32 gallons of diesel
Key functions	Lubricity improvement, injector cleaning, cetane boost, demulsifier
Compatibility	Ultra-low-sulfur diesel and diesel emissions systems
Corrosion protection	Contains rust and corrosion inhibitors

Our Verdict

Opti-Lube XPD is a solid maintenance additive for diesel owners who want a multi-function treatment that lubricates injectors, helps clean deposits, and improves storage stability. The 12-pack provides convenience for regular servicing, and while mileage improvements vary, the visible gains in engine smoothness and injector condition make it a worthwhile buy for trucks and diesel equipment that see regular use.

Frequently Asked Questions

How much fuel does one 8oz bottle treat?
One 8oz bottle treats up to 32 gallons of diesel; follow the label directions for best results.

Will this additive harm emissions systems?
No, the formula is designed to be compatible with vehicle emissions systems while reducing deposits and emissions.

Is this product effective in cold weather?
Yes, the XPD formula includes anti-gel properties and acts as a demulsifier to aid winter performance and water separation.