 Well, you know, in the shop this week, Brian, we had a 2015 Ford F-250 Super Duty with a 6.2 gasoline engine and 109,000 miles. The main complaint was that the customer had hard steering at lower speeds, and intermittently the steering wheel would shimmy left to right. So I checked the power steering fluid for the correct level and condition, and believe it or not, the oil was black and burnt, so...