Oil pressure goes way up with rpm

[josh2014]

On my 2014 Sierra with the 5.3 engine my oil pressure gauge runs high when my rpms reach over 3500. The oil pressure will continue to build, it will max out at 80 psi if I don’t ease up on the gas or let the transmission shift up. I haven’t noticed any differences in the way the engine runs or anything else

[Grumpy Bear]

What is the question? 

[pokismoki]

so your oil pump works.. thats good to hear

[newdude]

13 hours ago, josh2014 said:

On my 2014 Sierra with the 5.3 engine my oil pressure gauge runs high when my rpms reach over 3500. The oil pressure will continue to build, it will max out at 80 psi if I don’t ease up on the gas or let the transmission shift up. I haven’t noticed any differences in the way the engine runs or anything else

 

 

No problem.  These trucks 2014+up have a dual stage oil pump.  The high pressure stage opens up right about 3500rpm to meet higher RPM oiling demands.  

 

Truck is working as designed.  

[josh2014]

6 hours ago, newdude said:

 

 

No problem.  These trucks 2014+up have a dual stage oil pump.  The high pressure stage opens up right about 3500rpm to meet higher RPM oiling demands.  

 

Truck is working as designed.  

Thanks for your knowledge. I’ll sleep a little better knowing that

[rlcole321]

Also, because of that, they require "Thinner" oil, that's why it calls out 0W20, if you think "Old School" and run 10W40 or straight weight oil's then it could be an issue. 

[MikeBMW]

7 minutes ago, rlcole321 said:

Also, because of that, they require "Thinner" oil, that's why it calls out 0W20, if you think "Old School" and run 10W40 or straight weight oil's then it could be an issue. 

Yep, from long ago, here:

 

[Grumpy Bear]

2 hours ago, rlcole321 said:

Also, because of that, they require "Thinner" oil, that's why it calls out 0W20, if you think "Old School" and run 10W40 or straight weight oil's then it could be an issue. 

 

Hum...my 2015 4.3 Ecotec3 is the same architecture  and uses the same oil pump and yet...calls for 5W30. Imagine that! 

 

This motor platform changes displacement with bore and cylinder count. But is the same motor front to back. 4.3 to 6.2.

 

I've run 0W20, 5W20, 0W30, 5W30 and 10W30 in this motor over 141,500 trouble free miles. The only difference is fuel economy. Don't over think it. The spec 0W20 for economy. Not for durability. 

Edited June 17, 2021 by Grumpy Bear

[Eduardo Sime]

On 6/15/2021 at 11:04 AM, newdude said:

 

 

No problem.  These trucks 2014+up have a dual stage oil pump.  The high pressure stage opens up right about 3500rpm to meet higher RPM oiling demands.  

 

Truck is working as designed.  

My 6.2l regularly runs at 275kPa (middle range). When revs up to 3,700 it immediately hits 550kPa (upper range limit). 
is it normal? What would happen when revs up to 5 or 6,000rpms?

[Grumpy Bear]

2 hours ago, Eduardo Sime said:

My 6.2l regularly runs at 275kPa (middle range). When revs up to 3,700 it immediately hits 550kPa (upper range limit). 
is it normal? What would happen when revs up to 5 or 6,000rpms?

 

Yes, it is normal. You quoted @newdude saying that. He's a GM tech. Nothing 'extra' happens. You're just seeing the second stage kick in. Relax. All it good. 

[newdude]

15 hours ago, Eduardo Sime said:

My 6.2l regularly runs at 275kPa (middle range). When revs up to 3,700 it immediately hits 550kPa (upper range limit). 
is it normal? What would happen when revs up to 5 or 6,000rpms?

 

 

I'm guessing you didn't read the post I made that you quoted?