Re: 4 and 1/2 quart oil change?
8 pints = 4 quarts. 2 pints = 1 quart. Still 5 quarts total. Some SBC engines specified a 1/2 quart filter for some reason. I had a 68 Impala w/327 that did that. Seemed to be a passenger car thing. Switched to the 1 quart version as the 1 pint version was a PITA to get out. The longer filter was still shorter then the pan so anything likely to smack the filter would be well into smashing the pan first. IIRC - the old Fram numbers were PH13 = 1 qt, PH30 = 1/2 qt. I think the current Fram number is PH5 for the 1qt version.
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