I'm liking these numbers, car was run almost daily in Detroit through last years awful winter, then sporadically used all spring summer and fall. 1qt top off about 1/3 qt at a time, last top off (emptied the 5qt jug) around the 7000 mile mark. I suspect high silicon may be related to installing a new (presumably silicone) fel pro rubber valve cover gasket, with two dabs of RTV where the chaincase meets the block, just before I changed it last. Same filter (stock size denso) both runs
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