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Old 08-14-2017, 03:45 PM   #30
Ol' Ron
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Join Date: May 2010
Location: Chester Vt
Posts: 8,859
Default Re: Best oil for an 8ba

Just for those that have no idea what spring pressure the flathead has. The early 30's engines had 37 Lbs +/- 5. In all my engines I use 50 Lbs on the L-100 amd 65 on the Isky 400 jr. Others may use more but?? Now one of the most damaging things that affect bearings is heat and the thinner oil flows easier throug the barings taking away the nasty heat. Now if you have an engine with unteen thousand miles on it and tou can hear the rods rattling, then by all means use the heaver oil. Now my race engine has alittle mor clearance than stock and I use Penzoil 40 w
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