generator oil

Throughout this blog you will have the opportunity to explore a little more in depth everything related to generator oil, you will learn about its importance, the uses it has, how often oil changes must be carried out and finally you will find the answer to the question of what to do with used oil?  

In JRH Power Generator We have this and many other resources that can be very useful for the acquisition and constant care of your machinery, rest assured that you can count on us to guarantee you the highest quality products on the market.

Table of Contents

What is generator oil?

Oil has been a fundamental element to take into account for the proper functioning of any engine of an electric generator. It fulfills the function of being that lubricant that allows the parts found inside the generator to perform their respective functions in a synchronized manner with the others.

It is thanks to this viscous element that we have the possibility of avoiding certain setbacks such as the alteration of some operation due to a possible stuck part, or because the parts wear out due to the constant friction to which they are subjected. 

Now, many people are aware of how important this element is in the generator maintenance. However, not everyone knows precise information about the different types of oils and the differences that characterize each of them. 

Throughout this post we want to be able to show you everything that this element comprises, which may seem so insignificant but which in turn ends up being extremely essential. 

What oil does a diesel generator use?

To begin with, it is important to note that it is best to follow the instructions described in the manufacturer's manual for your generator. However, and in case you do not count or feel that this information has not been useful to you, here we will explain the concepts and give you some recommendations. 

First of all, it is likely that in the market you will find a series of oils that are framed with a series of letters and numbers that may seem strange and meaningless at first glance. But let us tell you that these ciphers have their reason for being, for example:

You come across an oil that comes with the encryption of “SAE 15-W30”

We must take into account first of all that the acronym "SAE" means "Society of America Engineers''. This means that it is an oil approved by the American Society of Engineers where said substance has been able to pass all the quality tests and other relevant controls. 

After this, we will find a set of letters and numbers, in this case being 15W-40, which mean the following:

The W comes from the word Winter, which translates from the English language as “winter”, a detail that serves as a reference point for the first number, which indicates the viscosity of the oil at 0ºF (about -18ºC)

The second number, the one located after the W, indicates the viscosity of the oil at 212ºF (which corresponds to 100ºC).

generator oil

Why do you have to change the oil in electric generators?

As we well know, the role of oil is simply essential when it comes to giving "life" to the proper development of all the moving parts that make up the engine, thus preventing the latter from deteriorating easily. However, this oil can be subjected to contamination generated by crankcase gases and the deterioration that natural aging can generate, thus causing that if a replacement is not carried out with a certain frequency, some components of the generator may become clogged and/or damaged. 

When should generator oil be changed?

In order to answer this question, it is important to give ourselves the task of identifying certain criteria of use, since it can be intuited that the emergency generators that take center stage on rare exceptional occasions are not subjected to the same wear and tear that those generators that are are subjected to daily use. 

In order to arrive at an answer that can be useful to us, we will examine the two cases:

Oil change in constant use generators

In this case, it is important to have proof of the hours of use for which the generator is subjected at the time of the oil change, since it is suggested that the first change of the generator be made once the first 50 hours have already been recorded. of use in order to find possible metallic sediments that may have been scattered from the factory. 

After the first maintenance, it is suggested to carry out the next ones once an interval between 120 and 200 hours of use is exceeded. 

Oil change in sporadic use generators 

In this particular case, it is recommended to be constantly aware of the state of the generator in broad strokes, confirm that no crack has been generated or any liquid is being lost, and starting from the oil aging period, each renewal can be carried out annually. . 

Should I change the oil filter too?

It is recommended to change the oil filter at the same time that the oil itself is changed, given that in many cases, the material by which these filters are usually made is exposed to a deterioration comparable to the period of its useful life. used oil in the generator.

What kind of oil do electric generators use?

Before going directly to talk about brands and others, it is pertinent to make a clarification about the two types of oils that you can find on the market, these being the "MONOGRADE" and the "MULTIGRADO". The main difference between these two is that the MONOGRADE maintain their viscosity under specific conditions, being limited mainly by the temperature of the area where the generator is located.

Making, for example, the distinction between MONOGRADE oils for winter and MONOGRADE oils for summer. 

While on the other hand, MULTIGRADE oils are used throughout the year, regardless of the temperature to which the generator environment is subjected. This type of oils are characterized by being more thermally stable and by not being affected by any particular type of temperature. 

However, generator manuals usually recommend two types of MULTIGRADE oils for all types of electric generators, be they diesel or gasoline.

These being the “SAE 10W-40” Y “SAE 15W–40” which could be said to be the best sellers on the market.

What to do with used oil?

It is important to clarify that used oil is extremely harmful to the environment, given that by having a density much lower than that of water, it tends to remain on the surface of it, thus harming all the fauna and flora that come into contact with these used oils, so it is advisable not to dispose of them lightly, 

Fortunately, there is a way to recycle this used oil, so the best alternative is to consult the mechanical or industrial workshop closest in order to be able to find an agreement that is dedicated to said work and thus begin the reuse process.

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