I would like to know if this pressure wahser use only gas or (Gas and Oil) is mixed?

I don't believe that Husky (Home Depot) makes any 3000psi pressure washer that operates with a 2 Cycle motor. So.... gas only in the gas tank. Husky pumps can be from several differant manufacturers... some use no oil, some are sealed and don't recommend any attempt at oil changes, and some use Non-detergent 30w oil and some use 20-50 Full Synthetic oil. You can look up your specific model specifcations with a google search for Husky pressure washer.

That engine should be four stroke so no oil mixed with the gas.

See this link on how to change oil and recommended oil types:

http://www.briggsandstratton.com/engines/support/maintenance-how-to/Push%20Mower%20Engines/How%20to%20Change%20Oil/

Pump regular gas and no oil mix. Your engine has a dipstick which means its a four stroke engine.

The oil goes inside the motor. For summer use I recommend 30 weight non-detergent oil.

Change it out once a season *(Beginning would be preferred). Drain the gas out at the end of the season.

Hope this helps!

No there is not a place to put gas when you run out of it under the hood.. You are using a fuel injection system and you are thinking carbeurator... If you ran out of gas you will be able to get fuel pressure back in the fuel rails by turning key on and off.. but not in the crank position. You will hear the fuel pump priming.. just make sure that the fuel rails are full of fuel... and water mixing with oil?? if there is water mixing with oil in your system i will assume it is coolant.. and i will say head gasket. It is fairly expensive so if you know someone i would suggest to get them to do it... You can do a oil pressure test and see if your oil pressure is in spec.. and pressurizing the cooling system with a pressure guage to see if the cooling system holds pressure.. my guess is is that it wont

you need to clean the carburator of varnish from the oil/gas mix,over time and especially if it has set with gas/oil in the lines it will create a varnish buildup and plug the fuel lines,another thing is to remove the muffler which can get carboned up from the same oil/gas mix during combustion and block the exhaust port and create back pressure and cause loss of power to throttle

go to your hardware store and ask for some 2 cycle 50:1 oil, mix that with a gallon of gas and you're good to go. Before you mix, make sure that you read the oil container for it's recommendations! You can purchase a small container of oil that is all measured for 1 gallon of gas

There is universal 2 cycle oil available (pro-mix at Lowe's for example) that is good for all ratios from 16:1 to 50:1. With this oil you add the same amount of oil to the gas independent of ratio required. One gas can, no ratio worries. Hope this helps.

you shouldn't need to mix oil with gas on a four cycle engine. this is for two strokes.

That engine requires a separate gas and oil. There is an oil sump with oil level needle and cap on the side of the engine. This is where you fill it with special pressure washer pump oil available from any good outdoor store or place where pressure washers are sold. As for gas, Unleaded or Premium unleaded gas will work fine. Try not to use any fuel with ethanol blends however. Here is a list of oils that will give you an idea what to buy for the oil reservoir: http://www.amazon.com/gp/redirect.html?ie=UTF8&location=http%3A%2F%2Fwww.amazon.com%2Fs%3Fie%3DUTF8%26ref%255F%3Dnb%255Fss%255Fgw%26field-keywords%3Dpressure%2520washer%2520pump%2520oil%26url%3Dsearch-alias%253Daps&tag=onlinetoolrev-20&linkCode=ur2&camp=1789&creative=390957