zMAX for Diesel Engines
Built for Diesel. Proven Under Pressure.
Why Diesel Engines Need More Protection
Diesel engines run at a compression ratio of roughly 20:1 compared to 8:1 for gasoline engines. That higher compression delivers more power and efficiency, but it also creates greater heat, pressure, and carbon formation inside the engine. Left unchecked, this leads to engine knock, poor burn patterns, and fuel injection problems including clogged injectors, failing diesel pumps, restricted air filters, and EGR valve issues.
Diesel fuel is also more viscous than gasoline, making it easier for soot and contaminants to penetrate the fuel system. The result: black exhaust smoke, reduced power, and accelerated wear. zMAX disperses harmful carbon deposits throughout the engine and fuel system, improving performance, extending engine life, and reducing emissions. The same benefits apply to turbocharged engines.
Big Rigs, RVs, and Larger Diesel Equipment
Larger diesel engines tend to sit for extended periods between uses. When an engine sits, air can work into the oil causing air pockets that lead to rust and friction on moving parts. Because zMAX soaks into metal and weeps out over time, it provides continuous lubrication even during storage periods.
Note: zMAX does not replace engine oil. Continue changing your oil at the manufacturer's recommended interval.
For best value, shop the zMAX Heavy Duty 3-Pack or the zMAX Heavy Duty Gallon. For bulk and fleet quantities, call 888-534-1101.
How to Use
Add zMAX Micro-lubricant to your engine oil and fuel every 6 months or 6,000 miles. Use in your transmission after each flush. For larger vehicles, add zMAX at your manufacturer's recommended oil change intervals. Works in gasoline and diesel engines, automatic and manual transmissions.
Proven in Locomotives
The locomotive diesel industry has documented impressive results using zMAX in line engines. Read the case studies.