Free Shipping on orders over $100  •  Independently wear-tested  •  Manufacturing since 1985
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Shop SFR — Protection You Can Measure

Every size shows exactly how far it goes before you order. One gallon of fortifier treats up to 128 quarts of oil. Independently wear-tested at leading independent laboratories in the United States.

Buying for a fleet or shop? Pails ship boxed by FedEx Ground; drums and multi-pallet orders are quoted with freight — call 800-735-6438 and we'll price it against your equipment list.

Why not just buy a better motor oil?

Every certified motor oil meets the same specification, and nothing pays anyone to go past it — the rules let a brand say “exceeds,” never by how much. The base oil is the only real difference you can buy. SFR adds what no specification asks for: an extreme-pressure barrier on the metal, plus more corrosion protection and more detergent. Read the whole answer

🛢️ 55-gallon drums are available on every motor oil grade and are quoted with freight — call 800-735-6438.

Not Sure Which Fortifier?

Match It to What You're Protecting

Gas engines, diesel engines, gear boxes, hydraulics, compressors — each has its own formula. Tell us what's in your yard and we'll spec it.

Talk to a Lube Specialist Start with Oil Analysis
☎ 800‑735‑6438 · Whitehall, Montana · Manufacturing since 1985