Is mixing mineral and synthetic motor oils safe?

Mixing mineral and synthetic motor oils in error is relatively easy, but what are the consequences? Is it possible to safely change from regular crude based motor oil to full synthetic engine oil?

What the experts say about mixing mineral and synthetic motor oils?

How do you extend the shelf life of synthetic motor oil?

Every now and again the debate around the shelf life of synthetic motor oil raises it’s head. In these debates it’s important to remember that motor oil retains its chemical properties if the oil is properly stored. Correct oil storage protects the oil, and consequently increases the engine oil shelf life over extended periods.

Synthetic oil does not contain contaminants like paraffinnic waxes, which are present in crude oil. Shelf life of synthetic motor oil basically depends upon the chemical compounds and additives being used and the storage environment.

Specialised hydraulic fluid for use in aircraft systems in the 21st century.

Specialised hydraulic fluid for use in aircraft systems came to the fore as aircraft performance increased in mid-20th century. The force required to operate mechanical flight controls became excessive, and hydraulic systems were introduced to reduce pilot effort.

Referring to the hydraulic principles, the hydraulic actuators are controlled by valves; these in turn are operated directly by input from the aircrew (hydro-mechanical) or by computers obeying control laws (fly by wire), all requiring specialised hydraulic fluid for use in aircraft systems.

Amazing polyphenyl ethers used in the SR 71 for lubrication set new standards.

Polyphenyl ethers used in the SR 71 for lubrication are a class of lubricants having unusual properties, most significantly high thermal and radiation resistance, chemical stability, a high refractive index, and positional stability. They are most useful as robust lubricants in a variety of extreme environments.

In 1906, during the exciting early days of synthetic organic chemistry, a German researcher named F. Ullman set out to make diphenyl ether. By