Oil is made in many different forms. To know what oil you need may be difficult. While we can't tell you which one is the best oil, but we would encourage you to know the lubricants and make the most suitable of your machine.
　

Properties of Lubricating Oil

It Takes Two
Lubricating oil is made up of two basic parts...
BASE OIL
To lubricate moving parts & the main component of lubricants.
ADDITIVES
To strength the base oil and according to different application to combine difference additives.
　

Lubricating Oil Functions:
★ Friction Control -- Separates Moving Surfaces
★ Wear Control -- Reduces Abrasive Wear
★ Corrosion Control -- Protects Surfaces From Corrosive Substances
★ Temperature Control -- Absorbs and Transfers Heat
★ Contamination Control -- Transports Particles And Other Contaminants To Filters / Separators
　

There are two types of Mineral Oil Properties:
1. Paraffinic: Viscosity Index of 95-105, Applications Include:
★ Crankcase Oils
★ Hydraulic Fluids
★ Turbine Oils
★ Gear Oils
★ Bearing Oils
2. Naphthenic: Viscosity Index of 30-70, Applications Include:
★ Locomotive
★ Engine Oils
★ Refrigerant Oils
★ Compressor Oils

What About Synthetics?
Synthetic lubricants are man made fluids with the following unique properties:
★ Scientifically Designed Molecules
★ Molecules Have Identified Structures
★ Fluid Properties Are Very Predictable
★ Made By Polymerization (To Make Larger Molecules)
★ Group ll And Group lll Oils
★ Higher Flash Point
★ Lower Pour Points
★ Lower Friction
★ High Shear Strength

The most common seen in the market of synthetic base oils are:
★ PAO (Synthetic Hydrocarbon)
★ POE (Polyol Ester)
★ PAG (Dialkylated Benzen)
★ Diester (Dibasic Acid Ester)
★ PAG (Polyglycol)
★ Silicone
★ Flour