Changing Generator Oil: Why and When You Must Do It

Standby generators are essential for homes and businesses, as they continuously supply power for lights and appliances during outages. Like any machinery, they require proper upkeep to function when you need them most. One vital maintenance task that is often overlooked, however, is changing the oil in generator engines. Let’s discuss the roles of oil in generator performance to understand why this task is crucial.

Lubricates and Seals Components

Generators consist of an engine, alternator, and various mechanical and electrical parts that work together to produce the electricity we need. When a generator operates, these components are constantly in motion and grinding against each other.

The oil forms a coat or barrier that reduces metal-to-metal friction and seals the piston rings within cylinders. Regularly supplying the generator with fresh oil averts premature wear and tear, leaks, and jammed or fused parts.

Cools and Maintains Safe Temperatures in Generators

Generator engines create excess heat when used and need adequate oil to regulate it. However, oil left in the tank for a long time loses its ability to absorb and dissipate heat. Because of that, it must be discarded and replaced with clean oil with excellent viscosity and thermal conductivity. Doing so can effectively prevent overheating, which may otherwise lead to engine failure and severe damage.

Cleans the Engine

Whenever generators are used, the inner parts create combustion by-products and various impurities. These usually include:

• Carbides
• Debris
• Soot
• Metal Particles
• Acids
• Varnish
• Sludge

The oil returns these impurities from the working surfaces to the tank. However, if left in the tank for a long time, it tends to collect contaminants. They build up and clog pathways and cylinders, diminishing the equipment’s functionality. Changing the oil is the only way to keep your generator’s engine clean and in top condition.

Prevents Corrosion

Generator oil contains additives that protect engines from rust, moisture, and other corrosive substances. Some quality oils are also formulated to neutralize the combustion acids produced when running these devices. Routine oil changes replenish these additives, ensuring continuous protection against deterioration and enhancing the generators’ longevity.

How Often Should You Change the Oil?

Generally, you must replace old oil after every 100-200 hours of operation or at least once a year. However, you should also consider the type of generator you have, how often you use it, the kind of oil it needs, and the manufacturer’s recommendations. So, it’s best to check the manual for your unit’s maintenance requirements and seek professional guidance.

Schedule Routine Oil Changes With HMC Generators

Changing the oil in your generator is an investment that will save you from the stress of malfunction, damage, and cost repairs or replacements. To ensure your unit remains a reliable backup power source, get expert assistance from our technicians in Baton Rouge, LA.