Putting things in places
Doing 100K PM on a suburban and AC Delco doesn't offer .060" gap plugs for those motors even though the engine ID sticker AND service manual both specify .060?
I must have missed something. I never knew plugs came with a specific pre-set gap. I've only been working on stuff for 40+ years, and always had to set the gap on new plugs to the auto manufacture's recommended gap.