Page 1 of 2 12 LastLast
Results 1 to 20 of 21

Thread: oil pressure

  1. #1
    Member blackbird99's Avatar
    Join Date
    Mar 2007
    Location
    Mckinney,TX
    Posts
    211

    Blue
    2000 t/a

    oil pressure

    what is the oil pressure sitting at on everybodys cars here when the engine is at 210 degrees?

  2. #2
    Member blackbird99's Avatar
    Join Date
    Mar 2007
    Location
    Mckinney,TX
    Posts
    211

    Blue
    2000 t/a

    does anybody know?

  3. #3
    Member ultra_badass's Avatar
    Join Date
    Mar 2007
    Location
    Corpus Christi
    Posts
    257

    navy blue matallic
    2000 WS6 trans am M6

    ideling its around lil under 55 then cruising around its a lil over 60

  4. #4
    Member blackbird99's Avatar
    Join Date
    Mar 2007
    Location
    Mckinney,TX
    Posts
    211

    Blue
    2000 t/a

    mine is at 40 idling!should i worry?

  5. #5
    Member ultra_badass's Avatar
    Join Date
    Mar 2007
    Location
    Corpus Christi
    Posts
    257

    navy blue matallic
    2000 WS6 trans am M6

    lol the only reason mine is so high is b.c it a new engine and oil pump...40 is still above the red i would worry if it got in the 30's but not intill then.

  6. #6
    Senior Member Sleeper101's Avatar
    Join Date
    Oct 2007
    Location
    Springcity
    Posts
    1,152

    Red
    Vette,240sx,ls1 camaro

    no its fine!!

  7. #7
    Member blackbird99's Avatar
    Join Date
    Mar 2007
    Location
    Mckinney,TX
    Posts
    211

    Blue
    2000 t/a

    well i also rear main seal oil leak and im running royal purple. i may pour in some lucas in it to help it a bit!

  8. #8
    Awaiting Activation
    Join Date
    Oct 2007
    Location
    NC
    Posts
    635

    SOM
    1998 T.A.

    Quote Originally Posted by blackbird99 View Post
    well i also rear main seal oil leak and im running royal purple. i may pour in some lucas in it to help it a bit!
    Don't put any Lucas in. The additive package in any decent oil is so good it's wasted money. Also, more pressure does not always mean more flow. Oil pressure is higher the greater resistance to flow. I know it seems contradictary to some ways of thinking but it is fact.

  9. #9
    Veteran 0rion's Avatar
    Join Date
    Aug 2005
    Location
    ohio
    Posts
    22,554

    98 Formula
    06 duramax

    40 psi is fine at idle. I'd say that's pretty close to the average. Usually 40 at idle and ~60 on the highway.

  10. #10
    Member 2-bowties&abird's Avatar
    Join Date
    Jan 2008
    Location
    lancaster,va.
    Age
    45
    Posts
    505

    cam/lt headers
    blue 2000 ws6 m6

    i've heard alot of mechanics say your fine as long as your around 30 psi.

  11. #11
    Senior Member Bottesini's Avatar
    Join Date
    Sep 2007
    Location
    Denton, Texas soon Lafayette, Louisiana
    Posts
    2,956

    Blue
    2002 Z28 Camaro M6

    I tend to think of it similar to blood preassure to high and that is no good, and to low is not good either. In some cases your oil preassure will move around. I know mine has been higher since the new oil pump that I had installed with the cam swap, but it is a ported and shimmed oil pump. As long as you are staying away from the red zones on the gauge in general you should be fine.

  12. #12
    Member 2-bowties&abird's Avatar
    Join Date
    Jan 2008
    Location
    lancaster,va.
    Age
    45
    Posts
    505

    cam/lt headers
    blue 2000 ws6 m6

    Quote Originally Posted by Bottesini View Post
    I tend to think of it similar to blood preassure to high and that is no good, and to low is not good either. In some cases your oil preassure will move around. I know mine has been higher since the new oil pump that I had installed with the cam swap, but it is a ported and shimmed oil pump. As long as you are staying away from the red zones on the gauge in general you should be fine.
    how much was that oil pump i think i might do that.

  13. #13
    I lika da Chevy's LETHALxLS1's Avatar
    Join Date
    Oct 2006
    Location
    USA
    Posts
    5,318

    BLACK
    Z/28 LS1

    Quote Originally Posted by blackbird99 View Post
    mine is at 40 idling!should i worry?
    Dude thats high psi imo.

  14. #14
    I lika da Chevy's LETHALxLS1's Avatar
    Join Date
    Oct 2006
    Location
    USA
    Posts
    5,318

    BLACK
    Z/28 LS1

    Quote Originally Posted by 2-bowties&abird View Post
    i've heard alot of mechanics say your fine as long as your around 30 psi.
    30 is fine- even 20 is fine- as long as it goes up 10psi for every 1,000 rpms you are good to go.

  15. #15
    Senior Member Bottesini's Avatar
    Join Date
    Sep 2007
    Location
    Denton, Texas soon Lafayette, Louisiana
    Posts
    2,956

    Blue
    2002 Z28 Camaro M6

    Quote Originally Posted by 2-bowties&abird View Post
    how much was that oil pump i think i might do that.

    You can find them from most of the speed shops/sponsors for around $100-150ish. I just bought mine from the same place that I bought all the rest of my cam parts so that I only would be dealing with one person for my convenience.

  16. #16
    Senior Member
    Join Date
    Apr 2007
    Location
    Newport, RI
    Posts
    1,552

    Navy Blue Metallic
    '00 Formy A4

    Quote Originally Posted by LETHALxLS1 View Post
    30 is fine- even 20 is fine- as long as it goes up 10psi for every 1,000 rpms you are good to go.
    Good to know-

    I've heard that other places too, that a general rule of thumb is 10 psi for every 1K rpm's.


    Mine has me a bit worried though. It's within that range, but almost overnite it's gone from 40psi at idle hot to 25psi. On the highway at 1500rpm it's just under 40, but that's low too.

    I'm overdue on an oil change, the light just came on. Running Mobil1 5W-30 and Fram filter. I picked up some Castrol and a WIX filter, I just haven't had the time/weather to do it yet.

    Hopefully that's it, although the miles on the oil never has any effect on my 134k straight 6 Jeep.; 35psi @ idle and 45 while cruising.

    Is it possible for the pressure to drop so suddenly? Could it be the sending unit going?

  17. #17
    I lika da Chevy's LETHALxLS1's Avatar
    Join Date
    Oct 2006
    Location
    USA
    Posts
    5,318

    BLACK
    Z/28 LS1

    Quote Originally Posted by StuntmanMike View Post
    Good to know-

    I've heard that other places too, that a general rule of thumb is 10 psi for every 1K rpm's.


    Mine has me a bit worried though. It's within that range, but almost overnite it's gone from 40psi at idle hot to 25psi. On the highway at 1500rpm it's just under 40, but that's low too.

    I'm overdue on an oil change, the light just came on. Running Mobil1 5W-30 and Fram filter. I picked up some Castrol and a WIX filter, I just haven't had the time/weather to do it yet.

    Hopefully that's it, although the miles on the oil never has any effect on my 134k straight 6 Jeep.; 35psi @ idle and 45 while cruising.

    Is it possible for the pressure to drop so suddenly? Could it be the sending unit going?
    It very well could be the sending unit which is a simple fix that cost 30-40 bucks. Another consideration is you mentioned the oil is past due for a change-that can affect oil PSI. Another consideration is the gauge its self not being accurate. I would go with 10-40 just that little difference will help the pressure alot. 5-30 is too thin. I have run 10-40 in my z/28 for years. I would change oil and see what happens-if the psi is still low change the sending unit. If all else fails-new pump. I had a sending unit go out in my last z/28 and the pressure seemed to drop over night like you mentioned-it was weird because the guage still moved when it got hot etc.-just like it should. I put a new sending unit in and oil psi went to like 50psi at idle.

  18. #18
    Senior Member
    Join Date
    Apr 2007
    Location
    Newport, RI
    Posts
    1,552

    Navy Blue Metallic
    '00 Formy A4

    Quote Originally Posted by LETHALxLS1 View Post
    It very well could be the sending unit which is a simple fix that cost 30-40 bucks. Another consideration is you mentioned the oil is past due for a change-that can affect oil PSI. Another consideration is the gauge its self not being accurate. I would go with 10-40 just that little difference will help the pressure alot. 5-30 is too thin. I have run 10-40 in my z/28 for years. I would change oil and see what happens-if the psi is still low change the sending unit. If all else fails-new pump. I had a sending unit go out in my last z/28 and the pressure seemed to drop over night like you mentioned-it was weird because the guage still moved when it got hot etc.-just like it should. I put a new sending unit in and oil psi went to like 50psi at idle.
    Thanks alot for the info, I'll try that.

    I run the 5-30 because that what it said in the manual, although with almost 72k going a bit thicker would probably be a good idea.

    Funny what you said about the sending unit, mine does that too. It moves when I rev the motor or coast, and reads different from hot to cold, just at lower PSI's.

  19. #19
    I lika da Chevy's LETHALxLS1's Avatar
    Join Date
    Oct 2006
    Location
    USA
    Posts
    5,318

    BLACK
    Z/28 LS1

    Well oil pressure will definately drop when the car reaches operating temperature. When its cold out the oil pressure will start out being even greater when the car is first started then as the car warms it drops some. In the summer time oil pressure wont be as high because its hotter when the car first starts. Even though the 10-40 isnt much thicker oil it will help your oil pressure. My car just hit 70,000 on the clock.

  20. #20
    Junior Member
    Join Date
    Apr 2007
    Location
    Riverside OH
    Posts
    78

    NBM
    98 formula

    Quote Originally Posted by LETHALxLS1 View Post
    30 is fine- even 20 is fine- as long as it goes up 10psi for every 1,000 rpms you are good to go.
    I agree with this guy. At start up I'm at 55(I think). once it warms up its 40 at idle,but if I'm driving for long periods of time and its hot it will get as low as 36-37 around that at a red light. As long as it goes up when you nail it your fine.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Help: oil pressure
    By Z28boy2000 in forum General Help
    Replies: 16
    Last Post: 07-14-2009, 07:32 AM
  2. Help: Oil pressure goes down!??
    By 98T/A.SNAKEATER_ in forum General Help
    Replies: 15
    Last Post: 11-02-2008, 06:08 AM
  3. Replies: 3
    Last Post: 04-01-2006, 03:59 PM
  4. Looking for gauges! nitrous pressure, fuel pressure!
    By texasss in forum Parts Wanted / Trade
    Replies: 2
    Last Post: 10-29-2005, 09:05 AM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •