Yes. The synthetic fluids (polyalphaolefins) used in engine oils are man made versions of mineral oil and are therefore compatible with mineral oils. In semi-synthetic formulations, mineral oils and synthetic oils are part of the same formulation.

The only downside here is if you top up expensive synthetic oil with mineral oil you will be effectively diluting the advantages that such an oil will provide (good cold start, good high temperature performance and longevity).

It reduces friction and prevents wear by putting a lubricant film between the moving components. It prevents the deposit of sludge on the surface of the motor by keeping these unwanted products finely dispersed in the oil. It cools off the moving components of the motor and removes the excess heat.

API stands for American Petroleum Industry and GL stands for Gear Lubricant, see below for their definitions:
API GL-1 Straight mineral oil.
API GL-2 Mild EP for worm gear oils.
API GL-3 Mild EP for spur and spiral bevel gears in axles and transmissions.
API GL-4 Medium EP, moderate severity hypoid gears, manual gearboxes.
API GL-5 High EP, all hypoid axles, some manual gearboxes.
API GL-6 Extra high EP, now obsolete.

SAE stands for the Society of Automotive Engineers. The SAE classification system is a way of defining how thin or how thick an oil is. This is known as an oil's viscosity. The classifications are listed here in order of increasing thickness: SAE 75W, SAE 80W, SAE 85W, SAE 90, SAE 140, SAE 250.

These days it is more appropriate to ask," ... are there oils available that are not suitable for turbochargers?" as nearly all modern lubricants will protect turbos in petrol and diesel engines

EP means extreme pressure and refers to the additive used in gear oils. This additive is designed to stop metal-to-metal contact taking place between transmission components.

The EP additives are usually based on sulphur and phosphorous. These elements bond to the metal surfaces where there are points of extreme pressure and temperature, forming a sacrificial chemical layer. The sulphur gives gear oils their characteristic smell.

1. Use the cutting fluid with the suitable concentration (10x to 20x).
2. The mixing of other oils in the tank is an easy way to generate stains on the products, so remove other oils from the tank.
3. After machining, wash or air blow the products to remove any oil that has adhered to them.
4. Use a cutting fluid that has excellent compatibility with aluminum.

Use paints that are appropriate for use with water-soluble cutting fluids. Paints such as phthalic acid and lacquer have weak resistance to water-soluble cutting fluids, and using these paints will lead to them peeling off at a later time.

We recommend that you use printed coatings that use urethane paint or epoxy paint. Cutting fluids that have high pH values also have the tendency to cause paint to peel off.

The waste fluid of water-soluble cutting fluid must be treated. Also, after the fluid is treated, it must be further treated until it complies with the environmental standards determined by each local authority.

Therefore, we recommend that, in general situations, you have a fluid waste disposal contractor take care of your waste fluid of water-soluble cutting fluid.

You can judge that a fluid has reached the end of its service life when it meets the following conditions.
1. The fluid exhibits drastic degradation. Decay or rust is noticeable even when the concentration is correct. Even though the concentration is high, the pH does not increase and the fluid is not expected to recover.
2. A great number of other oils have mixed in with the fluid. The external appearance of the fluid has changed drastically (the color has changed to dark brown or gray). The machines become extremely sticky after using the fluid.
The fluid service life varies depending on the usage conditions, but generally, the fluid should be changed once every 6 months to 1 year.

The most common reasons for hose bursts is the wrong application, corrosion of the ferrules, high pressure pulsing of the hydraulic installation, incorrect bend radius of the installed hose and out of date hoses.

You must always refer to the original manufacturer’s official information. However most hydraulic systems will have a return filter either with a visual clogged indicator or electrical clogging indicator for your observation.