Oil for a Slant Six that's been sitting a long time

slantsixdan said

I have good results using a cautious procedure involving homemade "soup".

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Would that "soup" involve #2 or kerosene ? I used to add a qt+ and let my /6 idle for 1/2 hour then drain FOR A LONG TIME with the filter off before replacing filter and refilling. Back then money was short and this IS NOT a recommendation.