To me DP helped temporarily on the 300SD. In the end i replaced the injectors and all problems went away. I just got the part in and returned the car to my friend who bought it off of me, and the rebuilt injectors sure did make a big difference. It felt alot quicker then it did on the old injectors. I never really had a chance to drive it much when i installed the new injectors so it was nice noticing a big change in performance.

When my 87 300D had odd idle i used dp and it fixed it temporarily but this time i think ill probably go with bosio injector nozzles from kermaTDI.

I say if it has idle problems or anything at all funny run DP. If not you can run DP it wont hurt but you could save it for when you would really need it as a temp fix.

__________________
Current:
05 E320 CDI
07 GL320 CDI
08 Sprinter
05 Dodge Cummins
01 Dodge Cummins

Previous
2004 E55 AMG
2002 C32 AMG (#2)
1995 E300
1978 300D
1987 300D
2002 C32 AMG(blown motor :[
1981 300SD
1983 300SD
1987 300SDL
2002 Jetta TDI
1996 S420
1995 S500
1993 190E 2.6
1992 190E 2.3
1985 190E 2.3 5-Speed