However, it's not easily accessible. You'll likely need to remove various components, potentially including some belts and possibly the fan shroud, to get to it. A repair manual specific to your 1983 Oldsmobile Delta 88's engine (the engine size is crucial here - V6 or V8?) is highly recommended to locate the thermostat precisely and understand the steps involved in replacing it. Don't attempt this without one. Improper removal or reinstallation can cause serious engine damage.
