Driveshafts take a relentless beating, constantly applying load with substantial torque. Repairs, upgrades and modifications are always top of mind for Lee Mejia of The Driveshaft Shop. Citing expensive custom builds that completely neglect driveshafts and axles, Lee regales Willie and Kevin with stories of destructive and real-world testing, like what happens when a heavy projectile made out of steel suddenly pole vaults or grenades.

The Einstein of Additives, Chris Gabrelcik of Hot Shot’s Secret, returns for another informative podcast in which he demystifies viscosity; discusses the endless learning curve involved in developing problem-specific solutions for friction; and amazes the guys with tales of the World’s Fastest 7.3, his 11 Diesel World Records, and the very real 100,000 mile oil change.

They may not be all that sexy, but when it comes to pneumatics and air tools, a compressor is the first and most critical big tool you’re likely to buy. Today the guys learn from Jarrett Affolter of Ingersoll Rand all there is to know about air compressors – the different types, what the fail points are, how to make them last forever, and what size you need to do what you want to do.