Quote:
Originally Posted by Rev Jules
Would it be wise to use it before an oil change?
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Yes.
The suggestion that it "may" cause engine damage is nonsense. I've used Comma 'Flush Out' periodically for years with absolutely no problems.
The claim that a clean sump proves that flushing oil is unnecessary doesn't take account of the many parts of an engine which cannot be inspected, particularly the hydraulic tappets which from personal experience have benefitted from use of flushing oil.
The claim that it is not necessary with "modern" oils is disproven by the length of time that the new engine lubricating oil remains clean after use of flushing oil.
It's a case of the proof of the pudding is in the eating. Many people will theorise without having the practical experience. So Julien I'd suggest that you give it a try, particularly in your diesel, then make up your own mind.
Simon