If your diesel vehicle is expirencing poor fuel efficiency, loss of power, slow response or excessive smoke you may be due for a performance oil change.This service removes deposits from valves and combustion chambers, dissolves sludge and varnish, cleans stubborn oil deposits and restores engine balance and power. This is done using 3 BG chemicals, DOC, EPR and Premium 245. DOC (Diesel Oil Conditioner) neutralizes acids and acid corrosion, reduces friction and wear on engine parts, stabilizes viscosity and prevents slude through increased oxidation control and soot scatter technology. EPR (Engine Performance Restoration) softens and dissolves hard-to-remove deposits from piston rings, cleans micro passageways to maintain the critial hydraulic function of components such as valve train actuators and turbochargers, restores fuel economy and power and prevents excessive oil loss. Premium 245 cleans the entire diesel fuel injection system, removes internal injector deposits and is especially effective in high pressure common rail engines. BG recommends this service be done every 10,000 miles.