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Old 04-22-2005, 04:00 AM   #1
skubie209
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Default Oil pressure or oil temperature gauge?

I currently have a boost gauge and egt installed in my car. Sitting in my garage waiting to be installed is a tranny temp gauge (4eat owner) and a water temp gauge. My question is should I buy an oil temp or oil pressure gauge to fill the other hole in my gauge pod. What would be the benifit of knowing my oil temperature or oil pressure? Which one would be more vital to watch. Thanks.
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Old 04-22-2005, 09:37 AM   #2
bheinz57
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If it's N/A....pressure...if it's turbo/supercharged....temp. Brian
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Old 04-22-2005, 12:20 PM   #3
Orson
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Pressure - you can figure out sooner if you run out of oil
Temp - you can figure out sooner if you are cooking your oil

My feeling is that I am willing to bet you run synthetic oil, so temperature is not as much of a concern. Therefore, choose pressure.
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Old 04-22-2005, 12:43 PM   #4
drees
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You can also estimate oil temp using an oil pressure gauge since oil things at higher temps. You'll find that the oil pressure drops under hard driving as the oil temp rises.

You'll know when the oil has warmed up by watching oil pressure at idle. On cold starts oil pressure will be 80PSI+ at idle. After warm, pressure will vary between 20-40PSI.

If your bearings start wearing, you'll know as overall oil pressures will drop.

So I vote pressure.
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Old 04-22-2005, 01:41 PM   #5
skubie209
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I do use moblie 1 synthetic so I guess I'll go with an oil pressure gauge. Thanks for the reply's.
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Old 04-22-2005, 02:34 PM   #6
AJ711
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I went with both. The sandwich adapter had provisions for both, and I felt better knowing both aspects of the engine's conditions.

All very good points above, but it just depends on how in depth you're willing to go on engine monitoring. You have a coolant temp gauge waiting to go in, and the WRX has a water/oil cooler. This kind of displaces the need for a oil temperature gauge, since they will hover around each other and be close enough that monitoring both is unnecessary.

That being said, oil pressure will probably be more beneficial to your uses. You'll have far advanced notice of cooking the oil with the water temperature gauge%2 but losing oil pressure means engine death. I'd go for the pressure gauge.

AJ
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Old 04-22-2005, 03:55 PM   #7
offset
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Here are the results of the poll where I asked the same question...
http://forums.nasioc.com/forums/showthread.php?t=590595

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