Well, you could just give it a try. If the car doesn't run on the Diesel Kleen alone, just reconnect everything. It's a good question, because it would be alot easier to obtain the PS's Diesel Kleen than it is Diesel Purge. The only thing that I see that might be different about Diesel Purge is that is has some actual diesel in it. Where as Kleen is pure cleaner, meant to be mixed with diesel. I am only guessing here mind you.

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1999 MB SL500 (110,000 mi)
2004 Volvo V70 2.5T (220,000 mi)
2014 Tesla Model S 85 (136,000 mi)
MBCA member