Driving vehicle on two days 1/21-1/22/25 both days had a high of zero degrees, vehicle say for 4 hours at work outside and then was driven the 1 mile home. As pulling down my street car started running rough. Pulled into my garage looked and there was a oil steak up my driveway . My wife called me and when I got home I looked under car and looked like several quarts of oil on floor under car. She said no warning lights came on. I had it towed the next day to a local garage. He inspected the vehicle and said rear seal was blown and that there is knock in engine , so basically shot. We bought the car new in 2016 and it has less the. 90k miles. I contacted Chevy and they said nothing is out about that year. I contacted local Chevy dealer and was told this is a known pvc freeze issue with equinoxes and this engine but it has not been recalled. There is a Chevy bulliten about this issue that is the same engine but the bulliten covers 2010-1014. This is the same exact issue in the same exact engine. On my hat service bulliten they have increased the warranty to 10year 100k and are covering the repairs. But they will do nothing and ignore the issue on every other vehicle with this engine and this flaw. Lucky my wife made it home safe I am having the car towed to a Chevy dealership and am prepared to leave it there and demand it gets fixed.