Ford Mustang Forum - View Single Post - Castrol Synthetic Oil
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post #4 of (permalink) Old 02-20-2006
SHELBY GT 500 Member
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Joined: Aug 2002
Location: Topeka
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Originally Posted by ts3096
The synthetic oil is definitely worth some power. I couldn't tell you exactly what it is worth in you street car, but I have built a few high HP BBC's, and through dyno testing, have seen as much as 15 HP in switching from conventional 10W-30 to a Mobil 1 synthetic 10W-30.
yeah, but it's a smaller bore/stroke (MUCH smaller than a BBC) so the effect will be much smaller due to a much smaller surface ares, and the testing was already done using motorcraft semi-synth. it won't be that dramatic.

Woe to him who builds his palace by unrighteousness,his upper rooms by injustice,making his countrymen work for nothing...Does it make you a king to have more and more cedar?Did not your father have food and drink?He did what was right and just,so all went well with him. He defended the cause of the poor and needy,and so all went well...But your eyes and your heart are set only on dishonest gain,on shedding innocent blood and on oppression and extortion. Jer 22:13, 15-17
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