Monolec® Engine Oil provides excellent service for engines in mobile equipment and stationary generators. With its formulation of select base oils, shear-stable viscosity improver and Monolec®, LE’s exclusive wear-reducing additive, Monolec Engine Oil offers increased fuel efficiency, dependable performance and wear protection.

This SAE 10W-30 engine oil provides all-weather performance, including effective cold cranking at low ambient temperatures and excellent performance at higher temperatures. It also provides maximum wear performance, crucial for fleet and passenger car protection.

This balance of all-weather performance and engine wear protection is achieved through a carefully selected blend of synthetic and paraffinic base oils and an additive package that includes Monolec®, LE's exclusive wear-reducing additive.

For heavy-duty service in diesel engines. Exceeds performance requirements for Mack, Caterpillar, Cummins, Detroit Diesel, Ford and General Motors. For Allison C-4 fluid, chose 8430.

LE’s Monolec® GFS Engine Oils are a family of SAE 20W through 50 straight-grade engine oils formulated for extended drain service in on-road, off-road and marine diesel engines. They contain Monolec, LE’s exclusive wear-reducing additive, which has proven t reduce wear by 24.2% in radioactive wear tests.

Monolec Ultra® Engine Oil is an SAE 15W-40 engine oil that provides exceptional extended-drain service for diesel engines in mobile equipment and stationary generators. With its superior formulation of select base oils, shear-stable viscosity improver and Monolec®, LE’s exclusive wear-reducing additive, Monolec Ultra offers increased fuel efficiency, dependable all-weather performance and outstanding wear protection. (Monolec Ultra 8800 & 8801 are the same, except 8801 is undyed.)

20W-50 engine oil formulated for extended drain service in both on-road and off-road diesel and gasoline engines. It is especially formulated to protect 2007 low-emission engines, and is backwards compatible for use in older diesel engines as well. It is especially suited for use in air-cooled four-stroke motorcycle engines, racing engines, and other high temperature applications. The extra viscosity provides extra film strength at higher temperature. It contains MONOLEC®, LE’s proprietary wear-reducing additive.

Monolec Ultra® Syn Heavy Duty Engine Oil (8854) is a broad-range multiviscosity synthetic oil for diesel engines that delivers outstanding year-round performance, wear protection, fuel efficiency and extended drains. With its synthetic base oil and exclusive additive package, this SAE 5W-40 formulation reliably lubricates diesel engines, even in low-temperature conditions, without the shear stability and viscosity problems of conventional diesel engine oils. Its high viscosity index indicates less change in viscosity over a broad operating temperature range.

One of the primary advantages of 5W-40 vs. 15W-40 engine oil is better fuel economy. In a controlled lab setting, GM 6.5L dyno testing showed a 1.5-1.6% fuel economy improvement. In addition, lowviscosity or broad-range oils are preferred for low-temperature conditions because of their ability to achieve flow quickly during cold startups.

To provide the best protection for your car’s engine without sacrificing performance, endurance and efficiency, look no further than LE’s new Monolec® Tetra-Syn™ Engine Oil. LE has harnessed the latest technology and knowledge to formulate this high-quality, high-performance, proprietary synthetic engine oil for gasoline engines.

Available in SAE 5W-20 and 5W-30 grades, LE’s Monolec Tetra-Syn Engine Oil exceeds the minimum standards set by American Petroleum Institute (API), providing the ultimate combination of performance, protection, endurance and efficiency. It is a best in class 100 percent synthetic gasoline engine oil, and the secret to its superiority is the proprietary additive package designed to deliver resource-conserving fuel economy, protect emissions systems, keep engines clean and keep deposits to a minimum.

Whether you are a car enthusiast or the manager of a fleet of gasoline engines, you’ll appreciate Monolec Tetra-Syn Engine Oil’s ability to keep your engines running for longer periods while safely extending the time between oil changes.

Formulated for use in stationary and mobile natural gas engines, Monolec® Natural Gas Engine Oil (8845) is made from a synergistic blend of high-performance base fluids, salicylate detergent chemistry and superior wear-reducing additives. The resulting low-ash, engine-cleaning blend provides the perfect long-lasting wear protection without the accumulation of heavy deposits.

Monolec 8845 is a proven multigrade performer in various engine makes and models, even under severe operating conditions. It can be used with sparkplug-ignited engines, including mobile applications such as buses with converted Cummins and Detroit diesel engines.

8945 MONOLEC® Gas Engine Oil is a superior, straight-grade, low ash natural gas engine oil formulated with cutting edge technology that differentiates its performance from other natural gas engine lubricants. Formulated using high-performance base fluids, salicylate additive chemistry for superior deposit control, and outstanding wear reducing additives, including MONOLEC®, LE’s exclusive wear- reducing compound. All of these components work together synergistically to greatly decrease friction, minimize wear, remove heat, and keep engine components clean. It has been proven in various engine types, under severe operating conditions.

These products are high-performance straight-grade medium ash engine oils used for landfill gas pumping engines and generation units. Both are formulated with cutting edge salicylate chemistry which offers superior deposit control and resistance to oil nitration which results in extended lubricant drain intervals. They also contain increased wear control additives, including MONOLEC®, LE’s exclusive wear reducing additive, which greatly reduces friction, heat and wear. They have been proven under the severe field performance conditions experienced in these type engine applications. They are also recommended for stationary and mobile engines using sour fuels.

LE’s 8104 MONOLEC Two-Cycle Engine Oil’s special formulation instantly disperses in the fuel. This and other exclusive features of LE’s 8104 MONOLEC Two-Cycle Engine Oil help achieve optimum performance in two cycle engines. LE’s 8104 is blended with paraffinic base oils for greater film strength, lubricity and high natural Viscosity index. It contains MONOLEC, LE’s exclusive wear-reducing additive.

In two-cycle engines, lubrication is achieved by mixing the lubricant with the fuel, and using the fuel coming into the carburetor as a carrier for the oil. Lubrication of the entire engine must be accomplished in a single pass through the system. The fuel/oil/air mixture passes from the carburetor into the combustion chamber in a split second, where high temperatures instantly vaporize the gasoline. The oil, in droplet form, must lubricate all moving parts of the crankshaft, plus the piston and cylinder. If combustion of the oil is incomplete, or by-products are deposited in the cylinder, serious problems can develop such as spark plug fouling, clogging and restriction of intake ports, piston ring sticking or piston scuffing.

For Heavy-Duty, Long-Drain Service in Railroad Diesel Engines

Made from highly refined select base oils, LE’s Ultra RDE Oil was designed to protect silver alloy bearings in modern highefficiency diesel engines from wear and contamination. In addition to increasing the engine lifespan, Ultra RDE improves fuel efficiency and significantly reduces oil consumption.