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you can either collapse the second ring or leave it out. We did this on qualifying motors where we didn't want as much drag on internal parts, racing oil filters are another trick (i.e. NASCAR restrictor plate tracks, less filter media to push through, less horsepower)loss
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"The Stone Age did not come to an end because we had a lack of stones, and the oil age will not come to an end because we have a lack of oil" ; His Excellency Sheikh Ahmed Zaki Yamani (Saudi Arabia Oil Minister from 1962 to 1986)
https://ecomodder.com/forum/em-fuel-...ehicleid=10608
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