 This week in the shop, we're working on a 1989 Chevy truck. Good old truck, lots of them on the road, got the 350 engine in them, and they have some common issues going on now, and it's all been brought on by a lot in part by oils and how they've changed over the years in the name of emissions and things like that. So now that the zinc and ZDDP has been removed from the oil almost entirely,