Audi 80 Quiz
Engines

Break-In of a New Engine

In this manual: Engines
Technical Description — 39Engines — 41Exhaust System — 13Cooling System — 28Fuel tank and fuel pump — 12Air Filter and Intake Ducts — 13Mono-Motronic Injection System — 18Digifant Injection System — 19KE-III-Jetronic Injection System — 35MPI and MPFI Injection Systems — 32Clutch — 11Transmission and Driveline — 21Suspension and Steering — 33Brake System — 41Anti-lock brake system — 8Wheels and Tires — 13Body Electrical System — 35Ignition System — 24Lighting — 14Signaling Devices — 7Instruments and Auxiliary Equipment — 54Heating and Ventilation — 7Body Components — 18Troubleshooting — 6Specifications — 13
~1min read

During the first 1000 km, the moving parts of the engine (pistons and cylinders; plain bearings and shafts) must be allowed to run in. This should take place under low load and low engine speed. Engine output and service life depend on it. Therefore:

Do not press the accelerator pedal fully down; if the vehicle has an automatic transmission, avoid full-load positions and do not depress the accelerator pedal abruptly to the stop. Maximum engine speed: 4200 rpm!
Do not exceed 4200 rpm until the engine has reached operating temperature; when the engine is cold, shift up earlier.

During the first 1000–1500 km, the engine should be gradually accelerated to maximum speed or the maximum permissible engine speed (briefly 6300 rpm).

Note: everything said here about a new engine must be observed even more strictly for an engine undergoing running-in after an overhaul, which, as is known, reacts more sensitively to incorrect driving style.

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A quick Audi 80 quiz: every answer comes with an explanation and a link to the manual page.