Mystik Grease Gear Oil

Mystik Gear Oil: Proven Protection Across Every Drive Train

When it comes to protecting the gears that keep your vehicle or equipment moving, few names carry the pedigree of Mystik Lubricants. With roots dating back to 1922 and the backing of CITGO since 1989, Mystik has spent over a century refining lubricant chemistry for real-world demands — and their gear oil lineup reflects exactly that legacy.

The JT-7 Series: Multi-Purpose Gear Protection

At the heart of Mystik's gear oil range is the JT-7 Multi-Purpose Gear Lubricant family. Available in both 80W-90 and 85W-140 viscosity grades, the JT-7 line is engineered as a thermally stable, sulfur-phosphorus extreme pressure (EP) formula designed to protect heavily loaded gears under a wide range of operating temperatures. Whether you're running a light-duty passenger car differential or a demanding commercial axle, the JT-7 is formulated to handle the load.

For those who need the next level of performance, Mystik also offers the JT-7 Extended Range Full Synthetic Gear Lubricant in SAE 75W-90 — a fully synthetic option engineered for extended drain intervals and enhanced protection in temperature extremes.

The SX-7000 Synthetic Series

Stepping up to full-synthetic territory, the Mystik SX-7000 Synthetic Fluid is available in both 75W-90 and 80W-140 viscosity grades. These formulas are designed for high-performance differentials, manual transmissions, and axles where maximum film strength and thermal stability are non-negotiable. The SX-7000 line represents Mystik's commitment to staying at the forefront of lubrication technology, delivering the kind of protection that demanding powertrain components require.

Marine-Ready: JT-4 Lower Unit Gear Lubricant

Mystik's gear oil expertise extends beyond land-based applications. The JT-4 Premium High Performance Lower Unit Gear Lubricant is specifically formulated for outboard and stern-drive lower units, where water contamination, high RPM pinion gears, and corrosion are constant concerns. This makes Mystik a go-to source for boaters and marine technicians who need a lubricant built for the unique stresses of aquatic environments.

A Heritage Built on Industrial-Grade Standards

Mystik's reputation wasn't built in a lab alone. The brand develops its products in real-world conditions, with the goal of enabling each piece of equipment to perform at its best. Supplying automotive, heavy-duty, commercial, industrial, powersports, and agricultural customers through facilities across the country, Mystik produces millions of gallons of finished lubricants annually — a scale that speaks to the trust professionals place in the brand.

Whether you're maintaining a daily driver's rear axle, servicing a marine lower unit, or overhauling a heavy-duty commercial differential, explore the full range of Mystik Lubricants or browse all Gear Oil options to find the right viscosity and formulation for your application.