John M McIntosh wrote:
I converted it to delvac 1 5w40 about 2000 miles ago, guess I should
start both of them up and see which how they sound side by side.
Fairly sure the injector? noise I heard before diesel purge on the
603 is gone.
Perhaps I need to run another bottle in a week or so
The kind of noises you describe usually take months and many hundreds or
even thousands of highway miles of driving to "cure." That's because
many of the noises occur because of the condition of the prechambers and
it can take a VERY long time of proper combustion at higher engine
speeds and load to clean out a prechamber.
Lifter noise can take even longer. Usually 5,000-10,000 miles will
substantially reduce lifter noise, but one of my 2.2 liter 601.921
engines just kept getting quieter for 50kmi and my 2 liter 601.912 is
still getting quieter after 70 kmi!!
Marshall
--
Marshall Booth Ph.D.
Ass't Prof. (ret.)
Univ of Pittsburgh School of Medicine
Department of Pharmacology 1300 BST
Pittsburgh PA 15261 USA
[EMAIL PROTECTED]
