







Opti-Lube XL Xtreme Lubricant Diesel Fuel Additive — 8 oz Bottles — 24-Pack
Twenty-four filled 8 fl oz bottles. XL adds fuel-system lubricity, cleans injectors and helps protect against rust and corrosion. Treats up to 1,920 US gallons at the standard rate; the premium rate treats less fuel.
Opti-Lube XL Xtreme Lubricant Diesel Fuel Additive — 8 oz Bottles — 24-Pack
Opti-Lube XL is a concentrated diesel fuel additive that adds fuel-system lubricity, cleans injectors and helps protect against rust and corrosion. It supports reduced wear in fuel pumps and injectors and is compatible with modern vehicle emissions systems.
Product data
| SKU | OPT-XL8-24 |
| Formula | XL Xtreme Lubricant (purple label) |
| Package contents | Twenty-four filled 8 fl oz bottles. |
| Additive volume | 192 fl oz total; 8 fl oz per filled container |
| Fuel type | Diesel fuel; compatible with ULSD and biodiesel |
| Standard treat rate | 1 US fl oz per 10 US gallons of diesel (1:1,280) |
| Premium treat rate | ¼ US fl oz per US gallon or more, as directed on the label (1:512 or stronger) |
| Package treatment capacity | Up to 1,920 US gallons at the standard rate; 768 gallons at ¼ fl oz per gallon. Higher doses treat less fuel. |
| Per-bottle treatment | Up to 80 US gallons at the standard rate; 32 gallons at ¼ fl oz per gallon. |
Treatment and use
Measure XL for the amount of diesel being treated. The standard label rate is 1 US fl oz per 10 US gallons. For maximum lubricity and deposit control, use the premium label rate of ¼ US fl oz per gallon or more. For example, 20 gallons requires 2 fl oz at the standard rate or 5 fl oz at the listed premium rate. All volumes are US measures.
The current XL label includes preventive anti-gel support. Cold-flow results depend on the base fuel and treatment conditions; do not assume a guaranteed low-temperature limit or use it to restore fuel that has already gelled. Choose a suitable cold-weather treatment for the conditions and follow its label. XL may be mixed with other Opti-Lube diesel fuel additives as stated on the label; follow each product’s directions.
Read the product label and Safety Data Sheet for complete handling, storage and safety precautions. Continue normal fuel-filter and water-separator maintenance.

