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The Oldsmobile Diesel Technical Magazine

Olds-Diesel.com, Main:

Engine Warm Up

When the engine is started cold, it is a good idea to allow the engine to idle untill it reaches near operating temperature before driving. This way, the engine oil can warm and begin to flow through the engine, and the heads and block..and the GM head bolts can expand slowly...Owners of engines exceeding 200,000+ Origional motor miles, right down to the head gaskets (including pre 1981 engines) usually mention that they have always done this, coupled with routine oil changes. If you think about it, it makes sence..So what, youll have to start the car BEFORE you drink your coffee...