Is GL5 Better Than GL4-2?

The question, “Is GL5 better than GL4-2?” is an age-old one. Both are great brake fluids, but there are some notable differences between them. One major difference is the viscosity. GL-5 has a lower viscosity. The other is a lower phosphorus content. It also has lower extreme pressure additives. These differences make GL-5 a better choice for drivers who like to “drive it like you stole it.”

GL-5 has a lower viscosity

In order to select the best oil for your engine, you should understand how viscosity relates to the performance of your engine. GL-4 synthetic oil is the best choice for high-HP and powerful engines. The choice of GL-5 synthetic oil will depend on your budget as well as the type of engine you have. GL-5 synthetic oil has a lower viscosity than the GL4 2. It also has the advantage of high extreme pressure properties, which is essential for cars that are subject to high loads. This oil is also low in viscosity and is non-aggressive to non-ferrous metals.

GL-4 and GL-5 contain different additive packages. In GL-4, the additive package contains three to four percent EP Sulfur, whereas GL-5 has 4.5 to 6.5% EP Sulfur. Compared to GL-4, GL-5 is better suited for mechanical transmissions with heavy-load gears. Moreover, GL-5 has improved extreme pressure properties and reliably protects the gear box under high pressure.

GL-5 has a lower visco-temperature range than GL4 2 and should meet the recommendations of the manufacturer. According to API, GL-4 is intended for transmissions with light to heavy-load and sliding forces. It is commonly used in off-road and syncromesh manual shift truck transmissions.

GL-4 has half the amount of phosphorous additive as GL-5, and has a weaker surface tension bond. Moreover, it causes brass stripping and may not be suitable for high-speed hypoid gears. It is also safe for use on bridges and checkpoints.

GL-4 and GL5 are both good choices for passenger cars. Both meet the same API requirements but differ in viscosity and temperature. GL-4 is used on hypoid gear boxes, while GL-5 is best for high-service hypoid gears with shock loads.

It has less extreme pressure additives

HP Gear Oil GL-5 is a high-performance gear oil containing advanced extreme pressure additives. This oil is designed for final drives and gearboxes in industrial applications. It offers maximum protection for gear teeth under high load and allows for smooth operation with less force on engagement. You can learn more about the features and specifications of this product by viewing its Product Information Sheet.

EP additives are essential in protecting gears under extreme conditions. GL-5 gear oil contains twice as much of this additive as GL-4. This makes it ideal for spur gears in automotive axles and helical gears in transaxles. The EP additives help protect the gears even in high-load, high-speed environments.

GL4 and GL5 gear oil should be compatible with the type of transmission in your vehicle. Both types should meet the requirements of the manufacturer. Generally, GL4 is the recommended oil for a manual transmission, while GL5 is a better option for high-offset hypoid gears.

Extreme pressure gear oils contain a variety of additives to keep them performing at high temperatures and high pressure. However, some additives can cause harm to some metals. Chlorine can wear down bronze gears in worm-gear axles, for example. Therefore, it is recommended to use zinc-based protectants instead.

It has a lower phosphorous content

Compared to GL-4, GL-5 gear oils contain only a fraction of the amount of phosphorous that GL-4 contains. This lower phosphorous content results in lower wear and degradation. GL-5 is more suitable for high-pressure, heavy-loaded hypoid gears. Its reduced phosphorous content reduces the chances of brass stripping.

GL-5 oil contains less phosphorous than GL-4, and is ideal for units that have limited slip differentials or hypoid transmission. It also provides good protection for parts, due to its low concentration of sulfur-phosphorus additives. However, it is important to note that GL-5 oil is less soluble in water than GL-4 oil, and it can cause metal chips and premature wear.

GL5 oil is safer for yellow metal than GL4 oil. Unlike GL4, it contains sulfur, which corrodes yellow metals. But synthetic oils do not contain sulfur and are safe for yellow metals. They are cleaner and contain mineral additives that enhance their performance.

GL-5 oil is more expensive than GL-4 oil, so it is important to choose the right one for your needs. While GL-4 is suitable for synchronized boxes, GL-5 oil is better for the main gears. Copper shavings in GL-5 oil are harmful and can cause the failure of your car.

It is supposed to be “yellow metal safe”

GL5 oil is supposed to be safe for yellow metals such as copper, brass and bronze. But some people have concerns about how GL5 will react with these metals. Some forums say that GL5 is safe for these metals while others say it will harm them.

There are a few reasons why GL5 is not safe for yellow metals. Its higher sulphur content may not be good for yellow synchros. In addition, it may not offer the same characteristics as GL4 or GL1.

The high EP content of GL5 can damage single cone synchros, which require friction to work. To solve this problem, GM came up with a friction modifier called Synchromesh, which allows for certain amounts of EP in a lubricant. It is available in both a synthetic and semi-synthetic version. Unlike Pennzoil, Synchromesh uses inactive sulphur compounds as its EP.