temp up/oil pressure down

delrrex · 09-05-2001, 09:15 PM

As the engine temp rises(Climbing long hill)and keeping rpms the same as on flat road at 2200 rpm @80mph(aod trans)the oil pressure gauge shows a slight drop in pressure,about one notch on a stock 124k 5.0.Is this just the oil(10/40 conventional Mobil/STP filter) not maintaining its viscosity?

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Unit 5302 · 09-05-2001, 09:50 PM

That sounds like an oil pump that is getting weak (not maintaining pumping pressure as the oil warms up), and the engine just working a little harder, which could produce more heat.

09-05-2001, 09:15 PM	#1
delrrex Registered Member Join Date: Jun 2001 Location: lakewood,co.usa Posts: 22	temp up/oil pressure down As the engine temp rises(Climbing long hill)and keeping rpms the same as on flat road at 2200 rpm @80mph(aod trans)the oil pressure gauge shows a slight drop in pressure,about one notch on a stock 124k 5.0.Is this just the oil(10/40 conventional Mobil/STP filter) not maintaining its viscosity? )

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09-05-2001, 09:50 PM	#2
Unit 5302 Registered Member Join Date: May 1999 Posts: 5,246	That sounds like an oil pump that is getting weak (not maintaining pumping pressure as the oil warms up), and the engine just working a little harder, which could produce more heat.