In most cases, a pressure washer will not require oil changes. The reason why is that most of these units are air cooled and do not have an oil cooler (radiator). If your tested unit has a gasoline engine, change the oil after the first 5 hours of operation and then again after every 50 hours or once a year, whichever comes first. You can use any type of motor oil for this purpose.
However, if your pressure washer has a diesel engine and you work in extreme temperatures (below 32°F or above 100°F), you may need to change the oil more frequently than every 100 hours. Consult your operator's manual for recommendations on how often to change the oil when using the unit in such extreme temperatures.
Contrary to popular belief, pressure washer engines do need oil changes! Failure to change your engine's oil can lead to engine damage and even failure. Here are the steps for changing the oil on your pressure washer.
Step 1: Shut off the engine and let it cool for about 20 minutes.
Step 2: Remove the spark plug wire from the plug to stop a restart of the engine.
Step 3: Place an oil pan below the drain plug on the bottom of the engine. (The drain plug has a hex head; use an adjustable wrench or a socket wrench to remove it.)
Step 4: Drain the old oil. First, drain it into the drip pan or container that you can seal with a lid. When you are done, recycle your used oil at an appropriate facility in your area.
Step 5: Allow time for all the old oil to drain out, then reinstall and tighten the drain plug securely with a wrench. Don't over-tighten — just snug it up enough that there are no leaks.
Step 6: Use a wrench to remove and discard the old filter cartridge gasket and then remove the filter cartridge. Replace with a new filter cartridge and install it tightly by hand; then tighten it with a wrench just until snug (do not over-tighten).
Step 7: Put in the new oil. You can find out what kind of oil your pressure washer needs for its particular engine in your owner's manual.
Advantages of Oil Change in Pressure Washers
Oil changes are essential to keeping your pressure washer working properly and extending its life. Over time, contaminants can build up and cause damage to your machine. The engine oil separates these contaminants from the metal parts of your motor and keeps them from building up in the engine. However, after a certain amount of use, there are too many harmful particles in the oil for it to be effective anymore. Changing your oil will remove all of these harmful particles and ensure that they don't build up again.
One of the most common problems associated with not changing your oil regularly is that it becomes contaminated with moisture or dirt over time. This will cause sludge to form within your tank, which can cause damage to your pump and engine over time if not treated properly. There are several different ways you can go about treating this problem, including using a special detergent spray or purchasing a kit from a home improvement store Giraffetools collections.