How Much Metal in Oil Pan Is Normal After Engine Break-In: Real Drain Logs and Lab Data
We drained break-in oil at 100, 500, and 1,500 miles across two fresh engine builds : a crate SBC 350 and a Honda K24 top-end rebuild : cut open every filter, tested every plug with a magnet, and sent samples to Blackstone Laboratories at each interval. Here’s what normal actually looks like, with particle size […]