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1 Quart every 1200 miles? That seems insane. At their required worry level a 4.5 quart engine would have little to no oil by the time it hit 7k...
Could be a wheel bearing if it increases with speed, but not with RPM. Depending on how they pulled the ball joints they might have been damaged....
Looks fun. Haven't done anything with the community yet, I might have to check this out. Any date we need to RSVP by?