Pressuer Washer Pump Oil 15w-40

[Cmobile]

Just picked up a used Dewalt DXPW3425 pressure washer on Craigslist.

Gonna change the oil in the Pump and engine.

For the pump, online manual recommends Simpson Oil for the AAA pump (8.7GA12), or 15w40 if simpson is not available.

Pump plate just states 15w40.
Will any 15w40 work? There is a lot of info here about non-detergent oils for pumps.

Thanks,
~C

 

[totegoat]

I use pump oil in my Stihl, only takes 3oz. Manual doesn't mention a 15w40 alternate.

 

[Cmobile]

The Simpson Oil, $10-$15 per pint. Just says "non-foaming 15w40"

The placard on the pump merely states change oil every 100 hours with 15w40. The pump holds 8oz. of oil.

Has a nice 1.5" sight glass For my viewing pleasur. I'll change the oil with T4 15w40 that I have and see if the oil foams through the sight glass. If so, ill buy the overpriced Simpson Oil.

 

[tundraotto]

pump oil should be non-detergent

 

[Cmobile]

Ok. I'll wait on the change and order the Simpson stuff. It's the only 15w40 non detergent I can find.

I can find SAE30 ND all day, but the 15w40 seems like a unicorn.

Anybody know of alternatives?