PAG oil is a synthetic compressor lubricant used by original equipment manufacturers in their R134a automotive air-conditioner systems. PAG oil stands for polyalkylene glycol oil.
This type of synthetic lubricant is among the first developed for commercial and industrial use, and PAG oil comes in different viscosities for specialty applications. It has long been used by vehicle air-conditioning compressor manufacturers because of its outstanding lubricity and biodegradable properties. Recent developments have led to food-grade lubricants that are FDA approved for use with equipment that may accidentally come in contact with food. This new type of PAG oil is among the very few synthetic lubricants that have earned the FDA's seal of approval.Learn More
The main reason oil floats in water is because it is less dense than water. Anything less dense than water will float, including the human body, which contains fat, a chemically similar substance to oil.Full Answer >
Some of the disadvantages of oil are that it is a nonrenewable resource and creates air pollution. It also is often produced by countries who are unstable politically, and it can be harmful if spilled in the ocean or some other wildlife habitat.Full Answer >
Most car manufacturers suggest an oil change between 5,000 and 7,500 miles. The best way to determine how often a car’s engine oil should be changed is to refer to the owner’s manual.Full Answer >
Synthetic oil, which is manmade in a laboratory as opposed to being derived from crude oil, is more stable at a variety of temperatures and has a more consistent molecular structure. Because of this, synthetic oil helps engines run cooler, provides better lubrication at higher temperatures and lasts longer.Full Answer >