texaschevyryder
Full Access Member
on the dash u have the gas and the battery and the oil temp or pressure whichever it is mine sits bout half way where should it be sitting or is it in the right place 
the oil pressure or temp
- Thread starter texaschevyryder
- Start date
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Drgnblood
F%ck Douchebagistan!
ok im not trying to take over the thread here...butttttt.... what if your oil pressure gauge shoots up to 60-80 when you give it heavy throttle....is that ok....i know that the oil filter can sustain up to 180psi..
When you first start you engine, the pressure should be higher, around 60 or so, until the oil and engine warms up. Once warmed up, 40 psi is the average pressure.
I get a lot of people asking me what it means when they are on the highway with the cruise control on and the oil pressure is more like 20-30. This is also completely normal. The engine and oil are warmed up and the oil is running thinner.
I get a lot of people asking me what it means when they are on the highway with the cruise control on and the oil pressure is more like 20-30. This is also completely normal. The engine and oil are warmed up and the oil is running thinner.
so i shouldnt freak out about mine? im guessing the gauge is effed up. the second i start the truck it maxes out at 80. and never moves until i shut it off? just got in one day and it started doin that. before it rode at 40 all the time.
blueflamed03
Elite Member
no, it also depends on outside temp, and weight of oil used. As mentioned, when it warms up, the pressure will drop.
icehead
Member
My gauge keeps dropping to almost (0) when at idle and the check gauges light come on.
Then when I take off it goes to 40 or 60 and the check gauges light goes off. as long as i'm on the the gas it's fine. Is this messed up?
Then when I take off it goes to 40 or 60 and the check gauges light goes off. as long as i'm on the the gas it's fine. Is this messed up?
96ProCompTahoe
Full Access Member
could be the sending unit on the engine is going bad.
YUOnDaGround
Full Access Member
Just to put this out there, ANY engine needs only 10psi per thousand RPMS. As in 10psi @ 1000RPMS, 20PSI @ 2000RPMS, and so on. Having said this, if you are seeing 40-50-60 psi at start up...then you are running too thick of an oil. When you take it up to red line around 6K if you are seeing more than 60-70psi you are running too thick of an oil. Your engine needs flow more than pressure.
SunlitComet
OBS Jedi-Do Good
for the vortecs:
Oil Pressure (Minimum at Normal Operating Temperature) 6 psi at 1000 rpm 18 psi at 2000 rpm 24 psi at 4000 rpm
fyi i see 50 when cold at start up and i run mobil1 5w-30 synthetic
Oil Pressure (Minimum at Normal Operating Temperature) 6 psi at 1000 rpm 18 psi at 2000 rpm 24 psi at 4000 rpm
fyi i see 50 when cold at start up and i run mobil1 5w-30 synthetic
YUOnDaGround
Full Access Member
Where did you get those numbers? The 6psi is low by a hair at 1000rpms, 18psi at 2000 rpms is so close it wont matter but 24 psi at 4000rpms is way low.
Also the reason you are getting 50psi at cold start up is because that there is no oil on the market thin enough to flow properly when cold, not even the 0w stuff is thin enough.
SunlitComet
OBS Jedi-Do Good
From the factory service manual. As for the flow, oil viscocity is effected by temperature obviously. but when i say cold I should clarify it as cold engine not cold weather. I would get that when i was indy with 90°+ weather. of course itwarmed up faster during that time. Current local is about 50-60's for the curent few weeks. With drops to low 30's at night. Sometimes high 20's
While yor numbers may seem appriate in some instances it sounds like that was someones general opinion (maybe even an attempt to rid themselves of liability issues of someone damaging theor engine from the info they read) and not based individual manufacturers data of any given engine. Just to put that out there. Sorry but a trust the engineers that design and built the machine more then those who just write another them ulness the got the data to back up their story.
While yor numbers may seem appriate in some instances it sounds like that was someones general opinion (maybe even an attempt to rid themselves of liability issues of someone damaging theor engine from the info they read) and not based individual manufacturers data of any given engine. Just to put that out there. Sorry but a trust the engineers that design and built the machine more then those who just write another them ulness the got the data to back up their story.
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YUOnDaGround
Full Access Member
That is good to hear that the FSM states lower oil pressures are ok, but I wonder if "tolerances" are optimal. I know that the manufacture states that in a 2005 corolla, 1 quart of oil consumption every 3000miles is allowable....it is within the specs of the engineers that designed the motor but is it ideal??
Having said that, and back to your thoughts, go with a lighter weight oil. Also my information regurgitation is based on the writings of Bob is the oil guy .com Seems to know what he is talking about. Interesting reading in the "Oil University".
Also is that FSM on PDF or hard copy? Could you email me the file if possible? Thanks.
Having said that, and back to your thoughts, go with a lighter weight oil. Also my information regurgitation is based on the writings of Bob is the oil guy .com Seems to know what he is talking about. Interesting reading in the "Oil University".
Also is that FSM on PDF or hard copy? Could you email me the file if possible? Thanks.
SunlitComet
OBS Jedi-Do Good
it would be ideal if not was lost, but that amount woul be allowed and not do any damage to components. that is basically the idea. in contrast the the permitted consumption for the vortec is 1 qt for 2k miles i believe. anything more and somethings wrong internal of the engine that needs to be address.
thanks but i and the vortec are happy with what i have. however when i get a new block one day the pressures will be a bit higher. i am running 1/4 mil miles on the original cylinder block.
kinda both really i can do it either way. but at any rate it is in electronic format from the two sources i have. it can be sometimes cut and paste but mostly print or a pdf tho the pdf for some odd reason invets the coloring of the graphic images. still working on a solution to that occasionally when i bother to.
the info i gave you was a cut and paste for the 1999 model. all vortec 350 should be similar.
thanks but i and the vortec are happy with what i have. however when i get a new block one day the pressures will be a bit higher. i am running 1/4 mil miles on the original cylinder block.
kinda both really i can do it either way. but at any rate it is in electronic format from the two sources i have. it can be sometimes cut and paste but mostly print or a pdf tho the pdf for some odd reason invets the coloring of the graphic images. still working on a solution to that occasionally when i bother to.
the info i gave you was a cut and paste for the 1999 model. all vortec 350 should be similar.
YUOnDaGround
Full Access Member
The vortec is a different engine than the LS based motor. I wonder what the oil pressure numbers are like for my LS motor based on the FSM.
SunlitComet
OBS Jedi-Do Good
give me exact model year and engine details.
YUOnDaGround
Full Access Member
5.3L flex, engine year is insignificant because they are the same across the board but if you must have it...2002.
SunlitComet
OBS Jedi-Do Good
sorry but even if it is the same i still want details.
measured as oil pressure minimum when hot
it is the same numbers as above psi and rpm. 6-1000, 18-2000 and 24-4000.
any other stuff you need.
measured as oil pressure minimum when hot
it is the same numbers as above psi and rpm. 6-1000, 18-2000 and 24-4000.
any other stuff you need.
YUOnDaGround
Full Access Member
Apparently from other posts you have been very helpful but I have to be honest, I cannot understand half of what you are trying to type. I'd like to be able to give you information to help your thought process but what exactly are you asking for??? You want 'details' details of what? Measured as oil pressure minimum when hot---what does that mean? Do you want my oil pressure measurements? or are you just stating an idea?
