Trucks are the main reason I took a pay cut to come to the dark side. My body thanks me every day. I could feel my knees heading south, even with underhood creepers, and the like. The powers that be didn't discriminate on the heavy stuff, nor did they care about the tech that pulled the illuminated MIL ticket, until that tech hit the profit margin, and they then decided it needed to be fixed.
I was trying to figure out why your mother-in-law was illuminated.
