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Phillips 25w60 is the only oil for my Jacobs engine. Because I have a turbo, it has to be clean and filtered. I change oil and filter every 25 hours.
Buying the oil by the gallon offered us a better value and meets our needs for oil consumption by our aircraft engine. PSC was the best price we could find including the charge for shipping. Shipping was a couple days slower than expected. Otherwise, we are very satisfied.
GREAT OIL! MY RADIAL LOVES IT