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If your talking about the pump oil you get just that. It is found in big box stores usually in the garden center. For gas engine you would use small engine oil purchased at the same place.
Best oil for small engine for most moderate climates is 30wt non-detergent. The pump can use mineral oil (air compressor oil ) sold at most auto stores and lumber outlets.
The pump uses SAE20 or SAE 30 non-detergent motor oil that fills up about half way The engine uses 10-W30 motor oil that comes a bit more than half-way up dip stick.
Do not turn washer on its side or upside down to drain oil, or oil will run into carburetor.
I took this picture of my power washer so it's easy to explain the oil. The oil is different for engine and pump.
The pump oil is 20 or 30 weight non-detergent. SAE20 or SAE30 motor oil. The level of the oil comes up about half way. There is a plastic viewport on side of pump ... oil comes up half way on viewport.
The engine oil is 10W30 motor oil. It comes up about half way or a bit more on dipstick.
To remove oil from pressure washer, do not turn engine on it's side or turn engine upside down or motor oil will run into the carburetor. You might wonder how I know that. Afterward, the carburetor needs to be cleaned out.
To remove oil, you can tip engine to the side but not so much that oil runs up into top part ... to remove the rest of the oil, you can use a plastic hose
Any good 20W-50 should work just fine in it. Also I like to use diesel oil in air cooled engines. Something like Rotella 15W-40 should be a great oil for your machine.
4 stroke synthetic is most likely what you'd want to run if it's a new unit to yourself. Otherwise any 4 stroke motor oil is fine, you can find it at any retailer that sells small engine machinery.
From the manual CleanShot 2050 Briggs and Stratton
Change Pump Oil
1. Drain engine oil and fuel from pressure washer
2. Use an 8 mm allen wrench to remove black pump oil cap between high pressure outlet and garden hose inlet.
3. Tiltl pressure washer to drain oil into an approved container until it drips slowly from pump.
4.Tilt pressure washer in opposite direction and empty premeasured pump oil bottle into same opening (a small funnel may be helpful) [THIS IS WHAT THE MANUAL SAYS-NOT CLEARLY WRITTEN IN MY OPINION OR WRITTEN BY SOMEONE FOR WHOM ENGLISH IS A SECOND LANGUAGE]
5. Install black pump oil cap and tighten firmly.
6. Set pressure washer in upright position. Add fuel and engine oil.
From the engine manual use synthetic 5w-30, 10w-30 from -20 degrees F to temperature of 100 degrees F.
Change oil after 5 hours of operation initially. Before tipping to drain oil, remove fuel from fuel tank by running until tank is empty. Remove oil cap and dipstick and tip engine. Keep spark plug side up. Or remove drain plug from the bottom of pressure washer with a ratchet and square extension and drain oil from bottom. (fuel does not have to be removed)
Dear jim_5,
Most domestic pressure washers use normal multi-grade engine oil. 15/50 wil be good. Industrial and high pressure washers usualy use gear oil (90 sae).
Regards,
fulltech.
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