CAT Pump Pressure Washer Pump Oil | Pumps | Northern Tool + Equipment

Can be used on all pressure washers that have Comet, General, AR and CAT pumps.

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Overall Rating

5 / 5

4 of 4 would recommend this product to a friend.

Product Reviews

Overall Rating:

5 / 5

Good Stuff, May 16, 2008
By captnjohn from San Leandro, CA

"It is worth getting CAT's brand oil for your pressure washer pump. I don't mind spending a couple more bucks towards preventive maintenance on an expensive piece of equipment."

What is your level of technical expertise?: Professional

Overall Rating:

5 / 5

Cat pump oil, October 21, 2007
By topcat777 from South Carolina

"This is the recommended pump oil for my cat pump.It seems to be a good product."

What is your level of technical expertise?: Professional

Top 50 Contributor

Overall Rating:

5 / 5

cat pump oil, October 8, 2007
By jasyou1616 from Conyers, Georgia

"This is good stuff. If you've got a pressure washer, steam cleaner, whatever the case if it's got a CAT pump, this is a must. I keep several spare bottles around to have for those oil changes or in case I need to add a little ever now and then."

What is your level of technical expertise?: Professional

Overall Rating:

5 / 5

Changing you Pump Oil - Regularly, July 9, 2007
By rbr2c from Lafayette, Louisiana

"Let me begin with a story. I didn't change the oil in my pressure washer because I had no idea it was needed. Well, it is..and let me tell you...if you don't change regularly, the pump will literally self destruct. Bolts shear, leaks blast out from all seams, then finally the reciprocating mechanism ceases. After replacing my factory pump with an awesome Northern Tools COMET brand pump and checking/changing the oil after each wash job, this pump runs cooler, and has more power than the original equipment. After each job you should check the oil and fill or replace it. Notice that after you drain and fill the reservoir the oil is at the recommended level. After you run the pump for about 8 hours you'll notice the pump oil level has risen past the full mark. Why...because all pumps have water that normally slips past the seals into the oil. This creates an OIL and Water mix that will emulsify into a cream color and has a reduced ability to lubricate. My Solution is this: When the oil has increased it amount past the full mark it is time to change the oil. Ever since I've followed this procedure my pump and its delivered pressure have been awesome. Word to the wise....after you run the washer for about 4 hours STOP and check the oil. If you are loosing oil and the level goes down then your pump is delivering oil in the water on to what ever your cleaning and you pump may be showing signs of normal wear.

Buy some oil and change it at least as often as you change the oil in the engine and more often than that if you want you pump assembly to last."

What is your level of technical expertise?: Professional

1 of 1 people found this review helpful.