Welcome to DEF Warehouse - Bulk DEF Fluid & Oils – Brookhaven, NY

DEF Warehouse is the leading supplier of Diesel Exhaust Fluid (DEF), motor oils, lubricants, antifreeze, washer fluid, and shop supplies for businesses across Brookhaven, NY. Whether you’re operating a fleet in Patchogue, running an auto repair shop in Medford, or managing public works in Bellport, we’ve got the products and delivery service you need to stay stocked and compliant.

We provide fast, local delivery throughout Brookhaven Township and all of Suffolk County.

We deliver API-certified, ISO 22241-compliant DEF to customers across Brookhaven, in packaging suited for any fleet or facility:

    •    Bulk DEF (tank or pump-in)

    •    330-gallon totes

    •    55-gallon drums

    •    2.5-gallon jugs (cases)

Our DEF is ideal for SCR-equipped diesel vehicles like school buses, sanitation trucks, semis, and off-road equipment. Whether you’re near Shirley, Yaphank, or Mastic Beach, we deliver on time and at competitive prices.

DEF Warehouse supplies a full line of diesel and gas engine oils, hydraulic fluids, and industrial lubricants throughout Brookhaven. Products include:

    •    CK-4 and FA-4 diesel engine oils

    •    SP/GF-6 gasoline motor oils

    •    Hydraulic oils, gear oils & ATF

    •    Grease (multi-purpose, high-temp, synthetic)

We serve trucking companies, heavy construction contractors, auto repair shops, and landscapers in Selden, Coram, Holtsville, and Centereach with reliable lubricant delivery.

Prepare for every season with our full lineup of coolants and washer fluids:

    •    Blue and purple antifreeze (pre-mixed or concentrate)

    •    Long-life and HD coolant blends

    •    All-season windshield washer fluid

    •    Winter washer fluid (rated to -20°F)

We regularly supply maintenance garages, bus yards, and municipal fleets in Patchogue, Bellport, Mount Sinai, and Port Jefferson Station.

Keep your facility stocked with critical shop and maintenance supplies, including:

    •    Oil absorbent mats & floor dry

    •    Spill kits

    •    Funnels, hoses & fluid pumps

    •    Shop rags, nitrile gloves & PPE

    •    Brake cleaner, degreasers, and shop chemicals

From the industrial zones of Medford to the service centers in Middle Island, our team makes it easy to keep your operation clean and compliant.

We serve all communities in the Town of Brookhaven, including:

    •    Patchogue

    •    Medford

    •    Selden

    •    Shirley

    •    Mastic

    •    Bellport

    •    Coram

    •    Mount Sinai

    •    Port Jefferson Station

    •    Yaphank

    •    Middle Island

    •    Holbrook

    •    Lake Grove

    •    Ronkonkoma

    •    Blue Point

    •    Ridge

Plus, nearby Suffolk County areas like Riverhead, Bayport, and Stony Brook.

  •    Trucking & logistics companies

    •    Municipal DPWs, fire districts & bus yards

    •    Heavy equipment & paving contractors

    •    Auto repair and quick lube shops

    •    Sanitation and recycling fleets

    •    Landscaping & tree service companies

No matter your industry, if your equipment runs on diesel or requires regular fluid maintenance, DEF Warehouse has you covered.

  •    Fast local delivery—same or next day

    •    Competitive pricing on all fluids & supplies

    •    Bulk delivery and volume discounts available

    •    Friendly, professional service team

    •    Customized delivery scheduling

From Setauket to Mastic Beach, we’re trusted by Suffolk County businesses to deliver the right products—on time and hassle-free.

Ordering DEF fluid, oils, and supplies in Brookhaven has never been easier.

    •    Phone: 855-228-9333

    •    Email: sales@defwarehouse.com

    •    Website: www.defwarehouse.com

Get in touch today and schedule your next delivery with DEF Warehouse—Brookhaven’s fluid and lubricant specialists.