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Delvac was only discussed in terms of water-cooled, N/A engines in this thread from what I can tell, and I didn’t say I was using it. But you knew that. Just looked at a handful of your 3,900+ posts and most are more helpful. Thanks though.

Bumping a very informative thread five years later... I just redid my turbocharged air-cooled 3.3L engine and would like to hear from y’all if there has been any newer formulations that might better address the horror stories of clogged cam spray bars from coking due to turbocharger heat-soak.