The wide range of temperatures, volatile driving conditions, and the large capital investment, require lubricants that perform well and provide long-lasting protection in the high-cost transportation industry.
DIESEL CRANKCASE OIL
CONVENTIONAL
Standard conventional diesel engine oils will remain the work horse of the industry for the next few years. As current older fleets are replaced with more efficient power units, this weight class will steadily lose market share.
Common weight 15W-40
API Service Category CK-4
SYNTHETIC BLEND
Blended synthetic diesel engine oils were designed for fuel economy. The EPA has mandated that engine manufacturers meet increasingly stringent fuel economy standards. A reduction in engine oil viscosities is the only way these standards can be met. Diesel engine oil viscosities will surely become lighter over time.
Common weights 15W-40/10W-30
API Service Category CK-4
FULLY SYNTHETIC
Fully synthetic diesel engine oils were designed for cold weather and extended drain intervals. Highly refined lower viscosity base oils increase pumpability while more robust VI improvers allow the fluid to stay in grade over a wider temperature range.
Common weights 10W-40/5W-40/0W-40/5W-30
API Service Category CK-4 & FA-4
TRANSMISSION FLUIDS
SYNTHETIC AUTOMATIC
This oil has become the most common multi-grade automatic transmission fluid and gear oil in the transportation industry here in the Chicago area. It’s synthetic base oil and extreme pressure additive package allow for greater wear protection at cold temperatures and better thermal stability at higher temperatures.
Common weight in the transportation industry:75W-90
SYNTHETIC MANUAL
Heavy Duty Synthetic Transmission Fluid is selectively engineered for heavy duty manual transmissions operating in severe service applications.
Common weight SAE-50
GEAR OIL
SYNTHETIC
In recent years, the majority of fleets and repair facilities have moved to fully synthetic differential oils. These multi-grade oils are manufactured with a lighter base oil for better cold weather protection and a more advanced extreme pressure additive package. They also have a recommend service life of 250,000 miles.
Common Weight 75W-90
CONVENTIONAL
In cold weather environments like Chicago, this class of fluids makes up less than 20% of the gear oil market. Regional fleets in warmer climates may still use this type of fluid.
Common Weight 80W-90
TRAXON E SYNTHETIC MTF
MTF is recommended for extended drain and severe service in heavy duty (class 6, 7, and 8) manual transmissions requiring a non-EP lubricant. MTF is backwards serviceable to Eaton PS-164 Rev 7. This product meets or exceeds the performance requirements for:
- API MT-1
- Eaton PS-386
- Approved for use in Eaton transmissions such as UltraShift Plus, Fuller Advantage Series (FAS), FR and RT Series
- Extended warranty coverage at Eaton Corporation (500,000 miles)
- Mack TO-A PLUS
- International TMS 6816 / Navistar MPAPS B-6816 Type II
GREASE
GENERAL
Greases are made of heavy base oils of varying viscosities combined with application specific thickeners sometimes referred to as soaps and extreme pressure additives.
THICKENERS
Soaps are the most common emulsifying agent used, and the selection of the type of soap is determined by the application. Soaps include calcium stearate, sodium stearate, lithium stearate, as well as mixtures of these components. Fatty acid derivatives other than stearates are also used, especially lithium 12-hydroxystearate. The nature of the soaps influences the temperature resistance (relating to the viscosity), water resistance, and chemical stability of the resulting grease.
ADDITIVES
Some greases are labeled “EP”, which indicates “extreme pressure”. Under high pressure or shock loading, normal grease can be compressed to the extent that the greased parts come into physical contact, causing friction and wear. EP grease contains solid lubricants, usually graphite, and/or molybdenum disulfide, to provide protection under heavy load. The solid lubricants bond to the surface of the metal, and prevent metal-to-metal contact and the resulting friction and wear when the lubricant film gets too thin. Some greases specify the percentage of Molybdenum disulfide or “Moly” is an indication of shock loading capability.
ANTIFREEZE/COOLANT
GENERAL
An antifreeze is an additive which lowers the freezing point of a water-based liquid. An antifreeze mixture is used to achieve freezing-point depression for cold environments and also achieves boiling-point elevation (“anti-boil”) to allow higher coolant temperature.
ETHYLENE GLYCOL
Ethylene glycol solutions became available in 1926 and were marketed as “permanent antifreeze” since the higher boiling points provided advantages for summertime use as well as during cold weather. They are used today for a variety of applications, including automobiles, but are gradually being replaced by propylene glycol due to its lower toxicity.
EXTENDED LIFE DIESEL COOLANTS
ZEREX™ Extended Life Antifreeze/Coolant patented formula has been charged with special inhibitors to protect diesel engines from liner pitting and hard water scale deposits for longer engine life. With the addition of an extender product, you can go 6 years, 14,000 hours, or 600,000 miles without changing your antifreeze. ZEREX Extended Life Antifreeze/Coolant uses the highest quality virgin ethylene glycol for freeze and boilover protection, and a patented hybrid organic acid (HOAT) corrosion inhibitor package to protect cylinder liners from cavitation and liner pitting and your engine from rust and corrosion. HOAT coolants typically mix an OAT with a traditional inhibitor, such as silicates or phosphates.
DIESEL EXHAUST FLUID
UREA AND DEIONIZED WATER
DEF is a slurried solution made of 32.5% urea and 67.5% deionized water. It is used as a consumable in selective catalytic reduction (SCR) in order to lower NOx concentration in the diesel exhaust emissions from diesel engines. The byproducts of this catalytic reaction are nitrogen and water vapor.
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