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Jason
Dodge Dakota
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5/17/2002
22:14:54
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 Subject: OIL PRESSURE
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Message:
IS it better to have it high or low? whats the difference?
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Dr. D
Dodge Dakota
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5/17/2002
22:37:56
| RE: OIL PRESSURE
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Message:
What really gives you protection is the quality of
the oil.
In fact with synthetics many engine builders have
lowered their oil pressures in order to reduce
wear on distributor drive gears and to add to the
overall horsepower output and to reduce the chance
of blown filters and coolers, etc.
I like to see between 30-50, but always consult
with your engine builder or engine spec
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Jason
Dodge Dakota
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5/17/2002
22:57:53
| RE: OIL PRESSURE
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Message:
so basically the lower the better?
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sandman
Dodge Dakota
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5/17/2002
23:05:31
|  RE: OIL PRESSURE
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Message:
Idle 25 psi min. add an additional 10 psi for every 1000 rpm's above idle. This is what has been proven to provide best protection for an engine in daily driver use. If you look at service manuals for American makes they will often list much lower miniums like 8-10 psi at idle. This is to prevent massive warranty repairs. Most vechiles do not have a distributor anymore and recomened oils keep getting thiner and thiner. Most books on preping small blocks for race use like the one put out by GM tell you how to shim the oil pump bypass ans stretch the spring to increase oil pressure out of the stock pump. They also recomend running 20W50 in the engine. These books are designed for people wanting to maximize power and durability.
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Jason
Dodge Dakota
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5/18/2002
02:56:01
| RE: OIL PRESSURE
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Message:
sorry, didnt really understand it, if i want maximum protection for my engine, is the higher oil pressure better for me or lower?
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sandman
Dodge Dakota
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5/18/2002
19:08:51
|  RE: OIL PRESSURE
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Message:
As long as the hig pressure is due to good pump output the higher your oil pressure the better within limits. If you have high pressure due to obstruction that is bad. Pressurized oil susepends all of the metal parts. No metal parts should ever make contact. The oil pressure acts like a pillow between moveing parts. If rpms or load increase faster then oil pressure then the oil film begins to squeez out of the bearings faster then it is replaced. If this happens too fast you get metal to metal contact and that is bad!!! So to review oil pressure GOOOOOOOOD!!! Most modern cars and trucks have a swith built into the oil pressure switch that completes the circuit with the fuel pump relay. If pressure falls lower then then 8-12 psi once the vechile is running then it shuts off power to the fuel pump.
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Jose
Dodge Dakota
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6/19/2003
19:32:19
|  RE: OIL PRESSURE
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Message:
My girlfriend has a 95 Dakota 5.2L two wheel drive.
The oil pressure gauge needle stays in the center of the instrument at 50-60 mph. It even goes up a little above center. On stops, the needle slowly drops down close to the first marker but does not quite hit the low marker. I changed the oil, filter and sending unit (from Auto Zone) because when I pulled the connector from the unit the inside was wet with oil. I figured this was the problem, but evidently it didn't fix the problem. This is the second sending unit(from Auto Zone) I've installed on this truck. Initially the original one needed to be repaced because it completely busted and all the oil was flying out of the port. This time I did an oil pressure test, but now I'm confused. The pressure at idle is reading 60 psi. The mechanical gauges that I bought for the test came with two gauges. One for transmission/oil pressure testing and an additional one for oil pressure only. I got a reading from one gauge. Then I quick disconnected one and hooked up the other one. I got the same reading...60 psi at idle. Can any of you guys and gals give me any words of wisdom?
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