OIL psi jumps from 40 to 50 for a sec while cruising at 70mph

[Payton34]

I was just on a 400 mi road trip and saw my Oil Psi go from 40 to 50 for just a second while cruising at 70 mph.  It happen twice during the trip that I saw.  I wasn't accelerating and never noticed this before.  What would cause it to jump for a second?  

[CamGTP]

The oil pump is computer controlled now, so if the computer did it we'd really never know why unless it's some sort of self test the pump will do while it's in operation.

[pokismoki]

are you running the correct oil filter? regulated  low pressure or high pressure BOV?

[Payton34]

yes its correct mobil 1 filter, just changed the oil and put in mobil 1 0w-20 fuel economy blend which I was wondering if its the MPG oil blend that may be thinner?  It was the only kind of Ow-20 that was in stock.

[pokismoki]

i'm using redline 5w-30 , i noticed my truck would pop up to 50 psi in park when i would rev slightly or blip throttle,  I'm not sure i have the correct "AC Delco" filter, i will have to stop by dealer and double check myself

 

using MOBIL 1 oil filter doen't mean its has the correct by-pass pressure, you just paid more $$$ hoping they did thier homework

Edited September 3, 2022 by pokismoki

[swathdiver]

On 9/1/2022 at 9:55 AM, Payton34 said:

I was just on a 400 mi road trip and saw my Oil Psi go from 40 to 50 for just a second while cruising at 70 mph.  It happen twice during the trip that I saw.  I wasn't accelerating and never noticed this before.  What would cause it to jump for a second?  

 

Read up on how a variable displacement oil pump works.

[pokismoki]

just curious but does it also bump up for a second when activating vlom v4 mode?

[Grumpy Bear]

Self test high volume three times per key cycle.

RPM sensitive trigger point around 3K. Variable by rpm on either side.  

Not a point to worry about. 

 

[Black02Silverado]

No worries, now if it was reading 0 then you can worry.