Take a deep dive with AMSOIL engineers Garret Gibeau and Erik Johnson on oil viscosity and formulations, the recent rash of new vehicle engine failures, and which synthetic oil you should put in your truck. The Truck Show Podcast is produced in partnership with AMSOIL, Kershaw Knives, and OVR Mag. Don't forget to check out truckshowpodcast.com for special offers from our friends and sponsors.