Ground up restoration is where you keep the car pretty much assembled, and perform body work and painting. Possibly replacing trim, lights, break components and interior. If required the drive-line might be replaced or repaired.. Whereas a frame off restoration usually involves tearing the car completely apart removing the fenders, doors, engine and drive-line usually removing and replacing interior components and taking the car body off of the frame for a framed vehicle, and
The purpose of proper lubrication is to provide a physical barrier (oil film) that separates moving parts reducing wear and friction. Oil also supplies cooling to critical engine components, such as bearings. Detergent oils contain dispersants, friction modifiers, anti-foam, anti-corrosion, and anti-wear additives. These detergents carry away contaminants such as wear particulates and neutralize acids that are formed by combustion byproducts and the natural breakdown of oil.