'07 P71 are there oil monitoring sensors that will start screaming error codes if I run heavier oil tha 5w-20?

Asked by Terry Feb 16, 2017 at 12:15 AM about the 2007 Ford Crown Victoria Police Interceptor

Question type: Maintenance & Repair

The engine does not seem to have blow-by or use oil but the bottom end sounds a little loose on cold starts until the oil pressure comes up. 123K and 2700 idling hours.

3 Answers
159,085

Bob answered 7 years ago

The timing chain adjusters may be making the noise. The 4.6 engine calls for 5w20 oil so I don;'t understand why you want a thicker oil. Make sure you use a quality oil filter such as Motorcraft. These filters have a silicon anti-drainback valve that helps keep the oil in the filter when the engine is not running.

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