You say, "However, in the real world those thickeners break down and the more of them there are the more the oil is changing over its lifetime." Do you have any data to support this?
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1967 Firechicken, 499", Edl heads, 262/266@0.050" duration and 0.627"/0.643 lift SR cam, 3.90 gear, 28" tire, 3550#. 10.01@134.3 mph with a 1.45 60'. Still WAY under the rollbar rule.
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