Most pressure washer pumps use a 30w non-detergent oil. This is because most pressure washer pumps use splash lubrication. This is a process that includes rotating “dippers” that throw oil into the pistons and cylinders.
Does a pressure washer have oil in the pump?
The pumps of most pressure washers under $400 have a pump you never do any maintenance on. They are filled with oil at the factory and permanently sealed. In other pumps, the pump oil should be changed on a regular basis with quality pressure pump oil and kept at the recommended level.
Is pump oil the same as engine oil?
Difference between oil used in pumps and engines.
The difference is the additives added to give the oil certain properties. Common additive difference between pump and regular motor oil will be: Magnesium sulfonate is used as a detergent additive for motor oil.
How much oil goes in a pressure washer?
In general, most pressure washers use around 5 oz of pump oil. This means that a single bottle of pump oil is enough for an oil change. Most pumps use non-detergent oil, as the pump has no oil filter.