SOURCE: Foaming in pump oil window
I dont know which comet pump you have, but it is just easier to get a new pump from one of the pressure washer companies on the internet and they sell them on ebay. You can also probably get a better pump that will fit your engine as well. Also, have you tried just changing the oil and not fill it too full? On my 5000 lb washer, if i fill the oil too high when I change the oil, it will foam some. Hope this helps you, Rick
SOURCE: Oil for Comet pump
aftermarket oil will be fine just use same grade of oil,all manufacturers want that extra kick,
SOURCE: What kind of oil do I put in my Comet AXD2524G-T pump?
If the Comet Pressure Pump Oil is some kind of a
Synthetic Oil that supposed to be extra effecient than
an ordinary oil, then that will cost extra. If that is ordinary multi grade engine oil (SAE 20 - 40), then, you
can buy over the counter. Most synthetic oil have additive that give extra longer life to all moving parts.
SOURCE: losing oil pressure slowly over days
oil sending unit may be going out or you may have a bed main seal...
SOURCE: what type of oil goes in a comet axd 3020 pressure
You should use what the pump manufacturer recommends. Typically a 30wt non-detergent (non foaming) oil. Do not over fill. If there is a sight glass half way is normal. Or if it has a dip stick follow the mark there.
Here is a great link for pressure washer parts and info
This link goes right to oil page:
http://pressure-washer-parts.com/shopdisplayproducts.asp?Search=Yes
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