So what is "normal oil operating temperature"?
08-16-2013, 01:01 PM
#16
Pro
As usual Macster makes a great point. As I stated above (but was not very detailed due to posting from my phone), I drive very easily until I see 150F oil temp (and I ignore the coolant temp for purposes of warming things up). I then start pushing the car a bit harder, but do it progressively so that both coolant and oil are agitated and circulating. With progressively pushing load and rpm I am comfortable taking it to WOT by the time the oil temp reaches 180F+. A bit of a PITA, but ensures longevity. If you think these cars are bad, cars like Ferrari's will absolutely drive you nuts. The 360 I had took a full 20 minutes for the oil to hit 180F and a friend's BB NEVER hit 180F unless he pushed the car really, really hard.
08-16-2013, 01:30 PM
#17
Macster brought up great points.
One thing I'll point out, however, is that 981 and 991 have new thermal management system where the temps are brought up much quicker and oil temps are kept higher than in the past (for emissions). I don't remember all the details but this was illustrated with diagrams at Tech Tactics East last year. T-stat staying closed while warm coolant circulates through the engine was one of the ways of achieving this.
If one pushes Sport mode or starts to drive aggressively, ECU is supposed to recognize this and bring the average oil temp down.
One thing I'll point out, however, is that 981 and 991 have new thermal management system where the temps are brought up much quicker and oil temps are kept higher than in the past (for emissions). I don't remember all the details but this was illustrated with diagrams at Tech Tactics East last year. T-stat staying closed while warm coolant circulates through the engine was one of the ways of achieving this.
If one pushes Sport mode or starts to drive aggressively, ECU is supposed to recognize this and bring the average oil temp down.
08-16-2013, 07:37 PM
#18
Macster brought up great points.
One thing I'll point out, however, is that 981 and 991 have new thermal management system where the temps are brought up much quicker and oil temps are kept higher than in the past (for emissions). I don't remember all the details but this was illustrated with diagrams at Tech Tactics East last year. T-stat staying closed while warm coolant circulates through the engine was one of the ways of achieving this.
If one pushes Sport mode or starts to drive aggressively, ECU is supposed to recognize this and bring the average oil temp down.
One thing I'll point out, however, is that 981 and 991 have new thermal management system where the temps are brought up much quicker and oil temps are kept higher than in the past (for emissions). I don't remember all the details but this was illustrated with diagrams at Tech Tactics East last year. T-stat staying closed while warm coolant circulates through the engine was one of the ways of achieving this.
If one pushes Sport mode or starts to drive aggressively, ECU is supposed to recognize this and bring the average oil temp down.
08-17-2013, 08:03 AM
#19
Rennlist Member
Thread Starter
With ambient low 80s.
Also no question water temp hits 195 within a few minutes.
08-17-2013, 02:05 PM
#20
Rennlist Member
Thread Starter
Went out today (63 outside). Coolant at 195 in 4 minutes & oil at 180 in 5 (timed). Within 7 minutes, oil temp was crossing 200. I guess a 7 minute warm up isn't too bad.
08-17-2013, 05:55 PM
#21
Race Director
Seriously, with a dead cold engine (at ambient) and ambient at 63F to have the coolant temperature to 195F in just 4 minutes...
Ok. How were you driving?
When I start with a cold engine I avoid high loads and rpms above 4K and with this kind of driving it takes way more than 4 minutes before the coolant temperature is at 195F.
I have some graphs of coolant temperature over time at work. Maybe Sunday I'll dig some out and post.
The only thing I can think of the newer cars with the divvied up coolant circuits have a much quicker warm up. But to get from 63F to 195F in 4 minutes.... that's impressive. And a bit unbelievable.
08-17-2013, 08:53 PM
#23
Rennlist Member
Thread Starter
While I believe you that's hard to believe.
Seriously, with a dead cold engine (at ambient) and ambient at 63F to have the coolant temperature to 195F in just 4 minutes...
Ok. How were you driving?
When I start with a cold engine I avoid high loads and rpms above 4K and with this kind of driving it takes way more than 4 minutes before the coolant temperature is at 195F.
I have some graphs of coolant temperature over time at work. Maybe Sunday I'll dig some out and post.
The only thing I can think of the newer cars with the divvied up coolant circuits have a much quicker warm up. But to get from 63F to 195F in 4 minutes.... that's impressive. And a bit unbelievable.
Seriously, with a dead cold engine (at ambient) and ambient at 63F to have the coolant temperature to 195F in just 4 minutes...
Ok. How were you driving?
When I start with a cold engine I avoid high loads and rpms above 4K and with this kind of driving it takes way more than 4 minutes before the coolant temperature is at 195F.
I have some graphs of coolant temperature over time at work. Maybe Sunday I'll dig some out and post.
The only thing I can think of the newer cars with the divvied up coolant circuits have a much quicker warm up. But to get from 63F to 195F in 4 minutes.... that's impressive. And a bit unbelievable.
08-17-2013, 08:56 PM
#24
Rennlist Member
Thread Starter
08-18-2013, 02:08 PM
#25
Race Director
Porsche says in its sales brochures almost every new model release that it has made improvements to the model's cooling and aerodynamics and I believe it. (Based on my experience with my 02 Boxster there was certainly some room for improvement in both areas.)
I suppose these improvements could also involve changes to allow the engine to warm up quicker. If so that's an impressive improvement.
08-19-2013, 02:53 PM
#26
Rennlist Member
Thread Starter
I believe you. I just find it amazing based on my experience admittedly with a much older model of car.
Porsche says in its sales brochures almost every new model release that it has made improvements to the model's cooling and aerodynamics and I believe it. (Based on my experience with my 02 Boxster there was certainly some room for improvement in both areas.)
I suppose these improvements could also involve changes to allow the engine to warm up quicker. If so that's an impressive improvement.
Porsche says in its sales brochures almost every new model release that it has made improvements to the model's cooling and aerodynamics and I believe it. (Based on my experience with my 02 Boxster there was certainly some room for improvement in both areas.)
I suppose these improvements could also involve changes to allow the engine to warm up quicker. If so that's an impressive improvement.
Same times yesterday morning and today, BTW. I'm consistently over 200 on oil temp in less than 10 minutes. Assuming the gauges are accurate, that's very acceptable to me.
Thanks for the info.
08-19-2013, 04:34 PM
#27
Race Director
Well, not to beat this to death but I took my 02 Boxster out yesterday "dead cold" at 3:52pm around 100F (the high was 100F at 4:05pm) ambient (but the car had been sitting unused and outside overnight and during the day) and even in that heat -- with the A/C off -- the temp needle was not even up to the 180F hash mark in 4 minutes of town driving.
I find it hard to understand how these new cars with around the same engine displacement working to push about the same weight around can warm up the coolant and oil (all of it) in that short a time starting out from a low temperature.
I find it hard to understand how these new cars with around the same engine displacement working to push about the same weight around can warm up the coolant and oil (all of it) in that short a time starting out from a low temperature.
