Oil pressure... less than 30psi @ idle when hot?
Oil pressure... less than 30psi @ idle when hot?
12-11-2005, 09:45 AM
#4
Registered User
iTrader: (3)
Join Date: Aug 2004
Location: Stockton, CA
Posts: 893
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by jvanquish
<-- noob
There were a couple threads at the repairing forum regarding the idle oil pressure at operating temp.
Mine is around 10psi after switching to Mobil 1 10w-40 from conventional oil.
12-12-2005, 06:28 AM
#5
Registered User
Join Date: Mar 2005
Location: Albany, GA
Posts: 1,286
Likes: 0
Received 0 Likes
on
0 Posts
I am also at 10PSI at idle with Mobil 1 10w-30.
You should be around 30-40psi when you are driving normally after your engine warms up. The oil pump is driven by the engine, with a gear pump, this positive displacement pump is totally dependent on RPM for Flow, thus the lower the RPM the lower the flow the lower the pressure for a given viscocity. When your engine is cold, the oil has a higher viscocity thus for the same flow rate you will have a much higher pressure. That is why they give your oil a range of viscocities (10w-30), one is for cold, the other is for warm.
Hope this helps.
You should be around 30-40psi when you are driving normally after your engine warms up. The oil pump is driven by the engine, with a gear pump, this positive displacement pump is totally dependent on RPM for Flow, thus the lower the RPM the lower the flow the lower the pressure for a given viscocity. When your engine is cold, the oil has a higher viscocity thus for the same flow rate you will have a much higher pressure. That is why they give your oil a range of viscocities (10w-30), one is for cold, the other is for warm.
Hope this helps.
Thread
Thread Starter
Forum
Replies
Last Post
liqalu04
Engine & Drivetrain
31
01-02-2022 12:58 PM
Colombo
Forced Induction
35
11-09-2020 10:27 AM
