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 ?????Oil Pressure?????
#807006
04/21/07 03:11 AM
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Joined: Mar 2007
Posts: 19
OP
Need a Spot
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OK I have a 1994 Yota 4x4 with a 3.0L with about 140K miles on it. I have only had the truck less than a year. I noticed the other day on a trip that the oil pressure guage at an idle is on the the first left hand mark and as I accererate and maintain a highway speed it increases and settles out in what I would call a normal possition "next mark on the right hand side. Does this sound normal for the pressure to very that much? Any feedback would be great.
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Re: ?????Oil Pressure?????
[Re: Texrok]
#807007
04/21/07 03:30 AM
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Joined: Aug 2001
Posts: 2,941
J Roll Me Over
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Normal.
The pump is spinning slowly at idle, thus lower pressure. When you increase engine RPM, the pump speed increases accordingly, and the pressure rises.
"A young man who does not have what it takes to perform military service is not likely to have what it takes to make a living." - John F. Kennedy
Proud owner of an 88 Montero (with a blown engine).
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Re: ?????Oil Pressure?????
[Re: Texrok]
#807008
04/21/07 04:10 AM
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Joined: Jan 2007
Posts: 241
Wheeler
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Not sure where you live but presume DFW is Dallas Fort Worth( I'm from Canada and only speculating). You may want to consider using a thicker oil in the warm/hot weather. I'm changing my oil this weekend and putting in a thicker oil as opposed to a thin winter oil. We are in the low 70's and I noticed my pressure drop a little.
Keep the Shiney Side up. Support our troops.
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Re: ?????Oil Pressure?????
[Re: canuck]
#807009
04/21/07 04:42 AM
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Joined: Mar 2007
Posts: 19
OP
Need a Spot
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Not sure where you live but presume DFW is Dallas Fort Worth( I'm from Canada and only speculating). You may want to consider using a thicker oil in the warm/hot weather. I'm changing my oil this weekend and putting in a thicker oil as opposed to a thin winter oil. We are in the low 70's and I noticed my pressure drop a little. Good point, I just changed the oil not to long ago. I put in a 10w30. I may try a 10w-40 next time. I don't mean to sound like a dumbass in this question, but I bought the truck from my dad and I don't drive it everyday because I have a work truck. Which really sucks because I really like to drive the truck. The sticker in the window from when my dad owned said 10w-30 so that is what I got. I just wanted to make sure I wasn't developing a possible problem. The truck runs great, has no leaks, and the oil level on the dipstick is right on. Thanks for the input guys.
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Re: ?????Oil Pressure?????
[Re: Texrok]
#807010
04/21/07 06:03 AM
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Joined: Apr 2002
Posts: 3,568
Roll Me Over
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My 3.0 does/did(stock gauge is now unplugged) the same thing. Originally it only dropped that low when at idle, then started doing it on the highway when holding at a constant speed. I installed an aftermarket guage to get a better reading, the pressure is at the high end of specs when warming up, and is above 55psi when cruising down the highway.
10/30 weight should be fine for you year round, that is all I have ever used, and the weather temps the truck runs in range from 115 in the summer to teens in the winter.
More than tread lightly. Leave it like you were never there, nor anyone else.
'90 X-cab 4.88's 33 BFG AT's, rr ARB, Headers, Ignition upgrade, cold air induction.
'91 X-cab 5.29's 315's BFG MT's, rr ARB, custom bumper and flatbed
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Re: ?????Oil Pressure?????
[Re: Snowtoy]
#807011
04/21/07 02:43 PM
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Joined: Apr 2000
Posts: 4,230
Roll Me Over
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My 3.0 does/did(stock gauge is now unplugged) the same thing. Originally it only dropped that low when at idle, then started doing it on the highway when holding at a constant speed. I installed an aftermarket guage to get a better reading, the pressure is at the high end of specs when warming up, and is above 55psi when cruising down the highway.
10/30 weight should be fine for you year round, that is all I have ever used, and the weather temps the truck runs in range from 115 in the summer to teens in the winter. Mine is the same and I to run 10/30 year round.
David Fritzsche
1990 Ex-Cab V-6,5-speed, with a few mods
04.5 CTD Dodge 2500 Ram--Tow Rig
Roseville, CA
"Serenity through Sobriety"
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Re: ?????Oil Pressure?????
[Re: OOP'S]
#807012
04/21/07 03:21 PM
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Joined: Mar 2007
Posts: 19
OP
Need a Spot
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Ok this is good news. Like I said I don't drive the truck but on the weekends so event though I have had it about a year I am really not familiar with all it's little quirks. Thanks for the input guys. I just wanted to make sure all is well.
Tex
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Re: ?????Oil Pressure?????
[Re: Texrok]
#807013
04/21/07 04:20 PM
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Joined: Jan 2000
Posts: 12,153
Web Wheeler
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Good point, I just changed the oil not to long ago. I put in a 10w30. I may try a 10w-40 next time. I don't mean to sound like a dumbass in this question, but I bought the truck from my dad and I don't drive it everyday because I have a work truck. Which really sucks because I really like to drive the truck. The sticker in the window from when my dad owned said 10w-30 so that is what I got.
I just wanted to make sure I wasn't developing a possible problem. The truck runs great, has no leaks, and the oil level on the dipstick is right on. Thanks for the input guys. I find the same thing on my 22RE. If I run at least a xxW40 weight oil, the idle pressure stays up in the normal range. If I run xxW30 it'll drop below the marked range on the gauge when the engine is hot. So I usually run a 15W40 or 20W50 oil year round.
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