I just bought myself a 20 gallon parts cleaner, anyone suggest what is the best fluid to use for these dirty diesel parts?

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1979 300D.

I like Purple Power. You can get a gallon jugs at Walmart for like $5.

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85 300D Turbo

Biodiel ?

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1992 300SD, 290K miles.

Don't know about purple power, but Simple Green is biodegradable, and it really works. You just need to let it soak for a few minutes like it says. You will be amazed. Also available in the big jug at Lowes.

Go to Home Depot and get the Zep citrus cleaner. It is the best degreaser on the planet and is all natural. It is water soluable so you can rinse the parts. If you want a solvent based cleaner that evoporates, then try the other ep products made just for parts washers.

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1981 300D 147k
1998 VW Jetta Tdi 320k
2001 Dodge Ram 2500 141k
1979 300D 234k (sold)
1984 300D "Astor" 262k(sold)
Mercedes How-To and Repair Pictorials
I love the smell of diesel smoke in my hair

Can you run Zep citrus cleaner through the parts washer pump?

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1979 300D.

I dont see why you could not. The pumps are made for all kinds of caustic solvents, so the citrus cleaner should not be a problem.

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1981 300D 147k
1998 VW Jetta Tdi 320k
2001 Dodge Ram 2500 141k
1979 300D 234k (sold)
1984 300D "Astor" 262k(sold)
Mercedes How-To and Repair Pictorials
I love the smell of diesel smoke in my hair

I second Californian (I think)

Biodiesel is a great parts cleaner. It's worth making a small 5 gallon bucket batch to do so. Checkout infopop.biodiesel.cc

Best part is the BD is a good parts cleaner and the glycerine byproduct is a good degreaser for everything else... like when I get grease on the car or, etc... But be careful because BD will strip some paint...

Bill

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'87 300SDL, intensely modified Greasecar setup, with nickle plated heat exchanger, 3 valve setup, 312,000 miles
'95 Suburban diesel, Greasecar basics, 16 plate heat exchanger, mercedes fuel lines, Racor filter
'85 Renault Alliance converted full electric vehicle