Oil pressure issue
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4wd High
Joined: Aug 2023
Posts: 9
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Oil pressure issue
This is my first time posting and this is a hail mary for me, but 1995 f150 upon start the oil pressure is in the normal range but after 5 min of driving will drop to the minimum then sitting at a light will go to the red. Im running high mileage valvoline 10w-30 and change every 5000, i however to run a fram filter(maybe my proble?) But i have replaced the sending unit and when i replace the oil pan gasket check the clearances of the oil pump and it was perfect well within spec, primed and put it back in, oil pressure was good for a while then started doing the same thing. Got a mechanical gauge to see what psi im at and after idling for 30min after driving im at 14 psi and holding at high rpm i am at 30psi, help
FTE Legend
Joined: Nov 2015
Posts: 30,992
Likes: 4,140
From: Angier, NC
Let me guess you have always used the orange can of death (Fram) filter or you are now just seeing the PSI drop using the Fram filter?
You should know the rule of thumb on oil PSI is 10 PSI for every 1000 RPM so 14 PSI at idle (under 1000 RPM) and 30 PSI as speed (Under 3000 RPM?) is with in spec.
But if I had to bet your money it is that orange can of death (Fram) filter as I have had Fram cause a problem with oil PSI on my Dodge and it was always after the motor got up to temp.
Swap out the filter for any other brand and see what happens.
Dave ----
You should know the rule of thumb on oil PSI is 10 PSI for every 1000 RPM so 14 PSI at idle (under 1000 RPM) and 30 PSI as speed (Under 3000 RPM?) is with in spec.
But if I had to bet your money it is that orange can of death (Fram) filter as I have had Fram cause a problem with oil PSI on my Dodge and it was always after the motor got up to temp.
Swap out the filter for any other brand and see what happens.
Dave ----
Thread Starter
|
4wd High
Joined: Aug 2023
Posts: 9
Likes: 0
Let me guess you have always used the orange can of death (Fram) filter or you are now just seeing the PSI drop using the Fram filter?
You should know the rule of thumb on oil PSI is 10 PSI for every 1000 RPM so 14 PSI at idle (under 1000 RPM) and 30 PSI as speed (Under 3000 RPM?) is with in spec.
But if I had to bet your money it is that orange can of death (Fram) filter as I have had Fram cause a problem with oil PSI on my Dodge and it was always after the motor got up to temp.
Swap out the filter for any other brand and see what happens.
Dave ----
You should know the rule of thumb on oil PSI is 10 PSI for every 1000 RPM so 14 PSI at idle (under 1000 RPM) and 30 PSI as speed (Under 3000 RPM?) is with in spec.
But if I had to bet your money it is that orange can of death (Fram) filter as I have had Fram cause a problem with oil PSI on my Dodge and it was always after the motor got up to temp.
Swap out the filter for any other brand and see what happens.
Dave ----
FTE Legend
Joined: Nov 2015
Posts: 30,992
Likes: 4,140
From: Angier, NC
Dave ----
FTE Legend
Joined: Nov 2015
Posts: 30,992
Likes: 4,140
From: Angier, NC
Good luck
I think in my case it may have hurt the motor a little because now when it gets up to temp and at idle the gauge drops and I dont remember that happening before.
Then again the motor had 293K miles on it, most highway and many pulling a car trailer so it could be a little tired
Dave ----
I think in my case it may have hurt the motor a little because now when it gets up to temp and at idle the gauge drops and I dont remember that happening before.
Then again the motor had 293K miles on it, most highway and many pulling a car trailer so it could be a little tired
Dave ----
Thread Starter
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4wd High
Joined: Aug 2023
Posts: 9
Likes: 0
Good luck
I think in my case it may have hurt the motor a little because now when it gets up to temp and at idle the gauge drops and I dont remember that happening before.
Then again the motor had 293K miles on it, most highway and many pulling a car trailer so it could be a little tired
Dave ----
I think in my case it may have hurt the motor a little because now when it gets up to temp and at idle the gauge drops and I dont remember that happening before.
Then again the motor had 293K miles on it, most highway and many pulling a car trailer so it could be a little tired
Dave ----
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Thread Starter
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4wd High
Joined: Aug 2023
Posts: 9
Likes: 0
Good luck
I think in my case it may have hurt the motor a little because now when it gets up to temp and at idle the gauge drops and I dont remember that happening before.
Then again the motor had 293K miles on it, most highway and many pulling a car trailer so it could be a little tired
Dave ----
I think in my case it may have hurt the motor a little because now when it gets up to temp and at idle the gauge drops and I dont remember that happening before.
Then again the motor had 293K miles on it, most highway and many pulling a car trailer so it could be a little tired
Dave ----
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FTE Legend
Joined: Nov 2015
Posts: 30,992
Likes: 4,140
From: Angier, NC
There are some that hate the factory gauges because they dont have numbers just lines so you dont know what the PSI or temp is.
I dont have a problem with factory gauges and if the oil is above the low line at idel and comes up with RPM I would not worry.
If you want to know just what that PSI is, or temp for cooling, install a aftermarket gauge so you know what it is.
Then you can either leave them installed or remove them.
I did not see how many miles and shape the motor is in and what weight oil you are running as they make a difference.
Dave ----
I dont have a problem with factory gauges and if the oil is above the low line at idel and comes up with RPM I would not worry.
If you want to know just what that PSI is, or temp for cooling, install a aftermarket gauge so you know what it is.
Then you can either leave them installed or remove them.
I did not see how many miles and shape the motor is in and what weight oil you are running as they make a difference.
Dave ----
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