The official oil pressure gauge reading thread
09-04-2007, 11:23 AM
#1
Craic Head
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The official oil pressure gauge reading thread
This is not, repeat NOT an attempt to finally determine which brand of oil is better or which viscosity is better in a 928.
What I'd like to do is pull together information for reference and if enough people respond, I'll put it into a spreadsheet and make it available on my website for future reference.
Here's what I'd like to ask:
What year car you have
What brand and viscosity oil you use (not how you feel about it
)
What the oil pressure gauge reads at idle when cold, then idle when warm, and
What the oil pressure gauge reads when revving at 5k rpms.
and if you know it, your oil consumption
That's all, just the facts, ma'am.
I'll start:
'85- 5 speed (US).
I use Amsoil, I think it's 15w50, but I'll have to check when I get home and edit if that weight is wrong
Idle when cold: 5 bar
Idle when warm: 3 bar (pretty consistently)
Reading at 5krpm: 5 bar rock steady
BTW- If you've got an SC or any other oil affecting mods, please list them, you get an asterisk * in the list. (or a star, if you prefer
)
EDIT- Adam (atb) had a good idea, how about mileage too? Mine's in my sig. And thanks everyone. I didn't want to add another post because everyone is just adding good info, I didn't want to break the streak.
What I'd like to do is pull together information for reference and if enough people respond, I'll put it into a spreadsheet and make it available on my website for future reference.
Here's what I'd like to ask:
What year car you have
What brand and viscosity oil you use (not how you feel about it
)What the oil pressure gauge reads at idle when cold, then idle when warm, and
What the oil pressure gauge reads when revving at 5k rpms.
and if you know it, your oil consumption
That's all, just the facts, ma'am.
I'll start:
'85- 5 speed (US).
I use Amsoil, I think it's 15w50, but I'll have to check when I get home and edit if that weight is wrong
Idle when cold: 5 bar
Idle when warm: 3 bar (pretty consistently)
Reading at 5krpm: 5 bar rock steady
BTW- If you've got an SC or any other oil affecting mods, please list them, you get an asterisk * in the list. (or a star, if you prefer
)EDIT- Adam (atb) had a good idea, how about mileage too? Mine's in my sig. And thanks everyone. I didn't want to add another post because everyone is just adding good info, I didn't want to break the streak.
Last edited by Mike Frye; 09-04-2007 at 01:36 PM. Reason: Adam had a good idea
09-04-2007, 11:57 AM
#2
Castrol 15w 40 (I think, will confirm in due course - not near the car at present)
Car 1990 S4
Cold Idle - 4.5 bar (gauge only ever reads this high, 4.5 = 'pegged')
Hot idle - 1.5 bar
Hot @ 5,000 rpm - 4.5 bar
Gauge reads about 0.5 bar too low, as confirmed by interrogation of digital dash. Will recalibrate by pulling pod and fixing needle on spindle 1/8" (0.5 bar) in due course.
Dave
Car 1990 S4
Cold Idle - 4.5 bar (gauge only ever reads this high, 4.5 = 'pegged')
Hot idle - 1.5 bar
Hot @ 5,000 rpm - 4.5 bar
Gauge reads about 0.5 bar too low, as confirmed by interrogation of digital dash. Will recalibrate by pulling pod and fixing needle on spindle 1/8" (0.5 bar) in due course.
Dave
09-04-2007, 12:02 PM
#3
Rennlist Member
Holbert 928 S4 no coolers, or any mods
Amzoil 20-50 racing
Idle when cold: 5.5 bar (pegged full)
Idle when warm: 3.5 bar
Idle when HOT 260 oil temp 3 bar
Reading at 2krpm hot : 4bar
Reading at 3krpm hot: 5 bar
Amzoil 20-50 racing
Idle when cold: 5.5 bar (pegged full)
Idle when warm: 3.5 bar
Idle when HOT 260 oil temp 3 bar
Reading at 2krpm hot : 4bar
Reading at 3krpm hot: 5 bar
09-04-2007, 12:02 PM
#4
Electron Wrangler
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'94 GTS with Mobil 1 15W50 84K miles
Cold idle 5 bar
Hot idle 1.5-2bar (depending on temp <100F 2 bar @115F 1.5bar)
Hot/Cold @ 5K rpm always 5 bar
Alan
Cold idle 5 bar
Hot idle 1.5-2bar (depending on temp <100F 2 bar @115F 1.5bar)
Hot/Cold @ 5K rpm always 5 bar
Alan
Last edited by Alan; 09-04-2007 at 06:22 PM. Reason: Add miles
09-04-2007, 12:30 PM
#5
Archive Gatekeeper
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1990 GT
Shell Rotella Dino 15W40
5 bar cold idle
2-2.5 bar hot idle
5 bar at anything over 3000rpm
Shell Rotella Dino 15W40
5 bar cold idle
2-2.5 bar hot idle
5 bar at anything over 3000rpm
09-04-2007, 01:29 PM
#7
Rennlist Member
How about adding mileage too?
'88 S4 A/T
160K'ish miles
Cold Idle 5 bar
Hot idle: 2.5 bar
3K rpms and higher: 5 bar
con rod bearings replaced about 20K miles ago
'88 S4 A/T
160K'ish miles
Cold Idle 5 bar
Hot idle: 2.5 bar
3K rpms and higher: 5 bar
con rod bearings replaced about 20K miles ago
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09-04-2007, 02:48 PM
#13
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93 GTS
100k miles
Mobil 1 15w 50
Cold Idle 4.5 bar
Hot Idle 1.5 to 2 Bar
Hot 5K 4.5Bar
Delvac 5W 40
Cold Idle 4.5Bar
Hot Idle 1Bar
Hot 5K 4.5Bar
Oil Consumption about 1 Quart every 1000 to 1500 miles
100k miles
Mobil 1 15w 50
Cold Idle 4.5 bar
Hot Idle 1.5 to 2 Bar
Hot 5K 4.5Bar
Delvac 5W 40
Cold Idle 4.5Bar
Hot Idle 1Bar
Hot 5K 4.5Bar
Oil Consumption about 1 Quart every 1000 to 1500 miles
__________________
Does it have the "Do It Yourself" manual transmission, or the superior "Fully Equipped by Porsche" Automatic Transmission?
George Layton March 2014
928 Owners are ".....a secret sect of quietly assured Porsche pragmatists who in near anonymity appreciate the prodigious, easy going prowess of the 928."
Does it have the "Do It Yourself" manual transmission, or the superior "Fully Equipped by Porsche" Automatic Transmission?
George Layton March 2014928 Owners are ".....a secret sect of quietly assured Porsche pragmatists who in near anonymity appreciate the prodigious, easy going prowess of the 928."
