Why does oil gauge show nothing in freezing weather, then good in warmer weather or warmer oil.

Asked by Ann Jan 17, 2017 at 04:25 PM about the 2004 Dodge RAM 1500 SLT 4WD

Question type: Maintenance & Repair

We had 20 degree weather, the oil pressure gauge did not respond on starting.  Ran fine, oil level good.  After running awhile, turned engine off and on again and pressure gauge showed normal pressure.

1 Answer
221,445

Rowefast answered 7 years ago

Are you running 10w30 or in the cold, below 20° there should be 5w30 weight oil, otherwise it may be the oil pressure sending unit may need to be replaced.

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