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Old 02-08-2011, 06:45 PM   #4 (permalink)
Ford Man
Master EcoModder
 
Join Date: Jul 2008
Location: Russellville, KY
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Hell, my '88 Escort has never had a by-pass system on it, I'm currently using 10K mile oil change interval using conventional oil and have been for about the last 40K miles, the car has 514K miles on the original engine with no rebuilds and still running. Engine still holds about 40-50 PSI oil pressure on a warm engine at 50-55 MPH on the highway and about 20-25 PSI at idle. Now tell me how a by-pass system will give me better service.
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