Oil change - now temp only goes to 94?
Discussion
OK, I have answers now. Rob at PGB CS has phoned me back...
1/ Whereas the water temp gauge shows a fixed 90C to confirm a satisfactory buffered range of temperatures behind the scenes (acting as a "green light"), the oil temp gauge DOES report the actual oil temperature.
2/ An oil temp warning activates below around 80C, and above what is considered normal (not stated), but does not activate during warm-up due to "warm-up mapping" where the car knows not to alert the driver to oil temp. It will only throw a warning if oil temp drops too low after initial warm-up.
3/ 80C is the minimum oil temp Porsche allow when testing vehicles so as to ensure oil flow and component protection. 100C is the ideal oil temp in Normal mode so that water produced by the combustion cycle can evaporate from the engine.
4/ My prior fixed reading of 105C was a FAULT which, had I reported it to PGB when it was occurring, would have been a concern as it should fluctuate. Those whose cars show a similar FIXED reading may wish to have this investigated. Although my displayed oil temp was inaccurate there is no reason to believe there have been any actual mechanical problems. Oil pressure is normal, the car has never used a drop of oil in 40k miles.
5/ No cause has been discovered for the faulty constant 105C reading as I hadn't reported it to the OPC and so they quite rightly just went ahead and did the service. It may have been some debris was present which has been removed by draining and refilling the oil. I guess the 105C reading wouldn't have been recorded as a fault by the car as it is within operating limits.
6/ PGB are paying for the oil to be changed again, just to be sure there is no contamination floating around from such debris.
I'm relatively happy now that I know the car is right and it was its previous state which was wrong, and not vice versa. I'll still keep an eye on oil temp to make sure it does get up to 100C even if it's averaging below this.
Excellent assistance from Rob at PGB CS who I have to commend for the way he has handled my concerns. Car will be back with me Monday after the repeat oil/filter change.
1/ Whereas the water temp gauge shows a fixed 90C to confirm a satisfactory buffered range of temperatures behind the scenes (acting as a "green light"), the oil temp gauge DOES report the actual oil temperature.
2/ An oil temp warning activates below around 80C, and above what is considered normal (not stated), but does not activate during warm-up due to "warm-up mapping" where the car knows not to alert the driver to oil temp. It will only throw a warning if oil temp drops too low after initial warm-up.
3/ 80C is the minimum oil temp Porsche allow when testing vehicles so as to ensure oil flow and component protection. 100C is the ideal oil temp in Normal mode so that water produced by the combustion cycle can evaporate from the engine.
4/ My prior fixed reading of 105C was a FAULT which, had I reported it to PGB when it was occurring, would have been a concern as it should fluctuate. Those whose cars show a similar FIXED reading may wish to have this investigated. Although my displayed oil temp was inaccurate there is no reason to believe there have been any actual mechanical problems. Oil pressure is normal, the car has never used a drop of oil in 40k miles.
5/ No cause has been discovered for the faulty constant 105C reading as I hadn't reported it to the OPC and so they quite rightly just went ahead and did the service. It may have been some debris was present which has been removed by draining and refilling the oil. I guess the 105C reading wouldn't have been recorded as a fault by the car as it is within operating limits.
6/ PGB are paying for the oil to be changed again, just to be sure there is no contamination floating around from such debris.
I'm relatively happy now that I know the car is right and it was its previous state which was wrong, and not vice versa. I'll still keep an eye on oil temp to make sure it does get up to 100C even if it's averaging below this.
Excellent assistance from Rob at PGB CS who I have to commend for the way he has handled my concerns. Car will be back with me Monday after the repeat oil/filter change.
Twinfan said:
Good info, cheers.
By the way, how did you contact PGB? I want to query my Zunsport grilles and the extended warranty...
Your profile doesn't permit emails. Can you message me for the phone number? Not sure I'm allowed to publish it here due to rules? Include an email address.By the way, how did you contact PGB? I want to query my Zunsport grilles and the extended warranty...
I asked OPC Sutton Coldfield before fitting my full Zunsports x 11. They said fine for original warranty.
Then, when extending warranty I asked OPC Leicester about the Zunsports. They said fine, no worries, and it flew through its 111 point check with no mention of the grilles.
Car came back yesterday. Will drive it today.
When it came back the driver explained the reason I'd seen 3 green bars on the oil level gauge just after it had been changed and not 4 bars (as it was before) was that to check the oil you have to have a warm engine over 90C, turn the engine off, turn the ignition on, go to oil measurement, pop the rear boot, the car then does a "reset procedure", and THEN check the oil level. Perhaps I had omitted to pop the rear boot when I checked it? He referred me to my owner's manual. I checked but can't see the boot lid bit.
Has anyone heard of the requirement to "pop the boot" in order to get a correct reading? Seems bizarre to me.
Perhaps he's getting confused with the "topping up the oil" section, where there is a requirement to open the boot lid for whatever reason... durr.
When it came back the driver explained the reason I'd seen 3 green bars on the oil level gauge just after it had been changed and not 4 bars (as it was before) was that to check the oil you have to have a warm engine over 90C, turn the engine off, turn the ignition on, go to oil measurement, pop the rear boot, the car then does a "reset procedure", and THEN check the oil level. Perhaps I had omitted to pop the rear boot when I checked it? He referred me to my owner's manual. I checked but can't see the boot lid bit.
Has anyone heard of the requirement to "pop the boot" in order to get a correct reading? Seems bizarre to me.
Perhaps he's getting confused with the "topping up the oil" section, where there is a requirement to open the boot lid for whatever reason... durr.
Edited by DJMC on Wednesday 21st March 12:29
DJMC said:
Car came back yesterday. Will drive it today.
When it came back the driver explained the reason I'd seen 3 green bars on the oil level gauge just after it had been changed and not 4 bars (as it was before) was that to check the oil you have to have a warm engine over 90C, turn the engine off, pop the rear boot, and THEN check the oil level. Perhaps I had omitted to pop the rear boot when I checked it? He referred me to my owner's manual. I checked but can't see the boot lid bit.
Has anyone heard of the requirement to "pop the boot" in order to get a correct reading? Seems bizarre to me.
Perhaps he's getting confused with the "topping up the oil" section, where there is a requirement to open the boot lid for whatever reason... durr.
he popped the boot and put another 1/2L in it more like ;-)When it came back the driver explained the reason I'd seen 3 green bars on the oil level gauge just after it had been changed and not 4 bars (as it was before) was that to check the oil you have to have a warm engine over 90C, turn the engine off, pop the rear boot, and THEN check the oil level. Perhaps I had omitted to pop the rear boot when I checked it? He referred me to my owner's manual. I checked but can't see the boot lid bit.
Has anyone heard of the requirement to "pop the boot" in order to get a correct reading? Seems bizarre to me.
Perhaps he's getting confused with the "topping up the oil" section, where there is a requirement to open the boot lid for whatever reason... durr.
I just checked my dash cam files and found the one where, in the workshop, the technician is explaining to the driver about this checking procedure. Quite amusing hearing them talking about me and my car.
Not sure if I'm allowed to replay it on here, or if anyone would be interested?
Not sure if I'm allowed to replay it on here, or if anyone would be interested?
DJMC said:
I just checked my dash cam files and found the one where, in the workshop, the technician is explaining to the driver about this checking procedure. Quite amusing hearing them talking about me and my car.
Not sure if I'm allowed to replay it on here, or if anyone would be interested?
Oh go on.....!! Would be quite entertaining.... Not sure if I'm allowed to replay it on here, or if anyone would be interested?
I’m thinking of getting a dash cam just to hear/see people’s conversations/reactions to my GT4 when I’m not around...!!Re— the point about “fixed” coolant temp being “normal”.... My coolant temp fluctuates, just as my oil temp does... Did PGB suggest that coolant temp— once up to “within range”— should record a fixed reading...?? Mine definitely doesn’t.....!! It fluctuates as I’d expect— ie. rises in stationary traffic, drops on the motorway....
DJMC said:
Has anyone heard of the requirement to "pop the boot" in order to get a correct reading? Seems bizarre to me.
There was a need to pop the bonnet, press it down again and wait a while to do the electronic oil check on a previous Audi A4 I owned (procedure in the owner's manual). So not inconceivable for there to be a similar procedure required for recent Porsches.Swimfinz said:
Oh go on.....!! Would be quite entertaining.... I’m thinking of getting a dash cam just to hear/see people’s conversations/reactions to my GT4 when I’m not around...!!
Re— the point about “fixed” coolant temp being “normal”.... My coolant temp fluctuates, just as my oil temp does... Did PGB suggest that coolant temp— once up to “within range”— should record a fixed reading...?? Mine definitely doesn’t.....!! It fluctuates as I’d expect— ie. rises in stationary traffic, drops on the motorway....
Yes, water temp in the 981 2.7 should go to 90C and stay there, whilst behind the scenes a range of acceptable temperatures are occurring. In other words "90C" acts simply as a green light. That's why I thought the oil temperature displaying 105C constantly was doing the same. PGB confirmed water remains static, oil fluctuates. I’m thinking of getting a dash cam just to hear/see people’s conversations/reactions to my GT4 when I’m not around...!!Re— the point about “fixed” coolant temp being “normal”.... My coolant temp fluctuates, just as my oil temp does... Did PGB suggest that coolant temp— once up to “within range”— should record a fixed reading...?? Mine definitely doesn’t.....!! It fluctuates as I’d expect— ie. rises in stationary traffic, drops on the motorway....
The GT4 may be different. Why not phone and find out?: My PGB CS manager was...
Rob Goad, Phone: 03457 911 911
DJMC said:
Yes, water temp in the 981 2.7 should go to 90C and stay there, whilst behind the scenes a range of acceptable temperatures are occurring. In other words "90C" acts simply as a green light. That's why I thought the oil temperature displaying 105C constantly was doing the same. PGB confirmed water remains static, oil fluctuates.
The GT4 may be different. Why not phone and find out?: My PGB CS manager was...
Rob Goad, Phone: 03457 911 911
I have just had a 4yrs service on my Boxster S at Reading OPC. I am having the same issue of the oil temp not going to 105 in normal and 94/95 in sport. The GT4 may be different. Why not phone and find out?: My PGB CS manager was...
Rob Goad, Phone: 03457 911 911
I had better contact them.
stebbo said:
I have just had a 4yrs service on my Boxster S at Reading OPC. I am having the same issue of the oil temp not going to 105 in normal and 94/95 in sport.
I had better contact them.
"Not" going? Just to recap... the oil temp should fluctuate, and it should be around 10C cooler with Sport button pressed.I had better contact them.
So long as it gets up to 100C from time to time in Normal, as mine did yesterday, and stays above 80C after warm up, there should be no worry.
BUT... do check and see what Reading come back with. I'm not sure where Porsche GB headquarters are in Reading but you'd imagine your OPC has better contact with the technical experts there than most other OPCs.
If you could post their explanation here it would be useful to see it it's consistent to what Rob in PGB CS told me after he'd gone to and fro with their technical people.
Porsche HQ is on the same site as Porsche Reading.
Like you, prior to the service in Normal it would be a very 100 all time, if fkuctuate a bit. Now on average it is 5-8 degrees less, it still fluctuates as before. Same with Sport mode. It is always above 80 though,
I just feel they have flashed the ECU or something. But let us wait and see.
Like you, prior to the service in Normal it would be a very 100 all time, if fkuctuate a bit. Now on average it is 5-8 degrees less, it still fluctuates as before. Same with Sport mode. It is always above 80 though,
I just feel they have flashed the ECU or something. But let us wait and see.
I’m sure you know, but as it’s something that has been incorrectly stated a couple of times I will comment. You do not need the oil temperature to reach 100C to evaporate off any water absorbed, any warmish oil temp (e.g 70C+) for an extended period will eliminate any water within the oil, obviously the warmer the oil the quicker it does this.
There is only really a problem here if you do lots of short journeys where the oil doesn’t get up to these temps at all and then water can accumulate more than is healthy.
There is only really a problem here if you do lots of short journeys where the oil doesn’t get up to these temps at all and then water can accumulate more than is healthy.
Green1man said:
I’m sure you know, but as it’s something that has been incorrectly stated a couple of times I will comment. You do not need the oil temperature to reach 100C to evaporate off any water absorbed, any warmish oil temp (e.g 70C+) for an extended period will eliminate any water within the oil, obviously the warmer the oil the quicker it does this.
There is only really a problem here if you do lots of short journeys where the oil doesn’t get up to these temps at all and then water can accumulate more than is healthy.
No, every good reference when Googling says 100C to get rid of water.There is only really a problem here if you do lots of short journeys where the oil doesn’t get up to these temps at all and then water can accumulate more than is healthy.
I've done my research and I'm sorry but you're wrong.
DJMC said:
Swimfinz said:
Oh go on.....!! Would be quite entertaining.... I’m thinking of getting a dash cam just to hear/see people’s conversations/reactions to my GT4 when I’m not around...!!
Re— the point about “fixed” coolant temp being “normal”.... My coolant temp fluctuates, just as my oil temp does... Did PGB suggest that coolant temp— once up to “within range”— should record a fixed reading...?? Mine definitely doesn’t.....!! It fluctuates as I’d expect— ie. rises in stationary traffic, drops on the motorway....
Yes, water temp in the 981 2.7 should go to 90C and stay there, whilst behind the scenes a range of acceptable temperatures are occurring. In other words "90C" acts simply as a green light. That's why I thought the oil temperature displaying 105C constantly was doing the same. PGB confirmed water remains static, oil fluctuates. I’m thinking of getting a dash cam just to hear/see people’s conversations/reactions to my GT4 when I’m not around...!!Re— the point about “fixed” coolant temp being “normal”.... My coolant temp fluctuates, just as my oil temp does... Did PGB suggest that coolant temp— once up to “within range”— should record a fixed reading...?? Mine definitely doesn’t.....!! It fluctuates as I’d expect— ie. rises in stationary traffic, drops on the motorway....
The GT4 may be different. Why not phone and find out?: My PGB CS manager was...
Rob Goad, Phone: 03457 911 911
A question for those of you with greater technical knowledge than myself (!!), and something my local OPC technicians couldn’t answer....
As I NEVER use the sport/autoblip button either on track or street— as I really enjoy heel and toeing everywhere I can!!— I wondered whether using “Sport” on the Motorway would be beneficial to engine wear/fuel efficiency, due to the lower oil/coolant temps resulting from the extra rad use ...?? As I rarely change gear during my long motorway drives, I’d be interested to know whether using the “sport” mode, could still have a “protective” effect on the motor, perhaps due to less oil breakdown at lower temps...?? Or is it simply better to have very hot/less viscous oil in order to better lubricate the working parts....??As an illustration, below are pics of my oil/coolant temps during a long motorway journey yesterday: they are significantly different, depending on whether “sport” or normal mode is used....!! But..... Which would be better for the engine +/- fuel economy...?? Any ideas....??
From my recent enforced online research it seems that whilst "pootling around" in Normal mode it's better to have the oil hotter to remove water in it which has been produced by the combustion cycle. This means staying in Normal mode whilst driving normally.
When you press Sport, the car knows you're intention is to press on and so lowers the oil temp so as to offset the higher temperatures anticipated.
I'm no expert, but logic suggests that driving normally with Sport pressed isn't what the designers had in mind. I think they assume that if you press Sport you ARE going to be driving sportily.
I've also read somewhere that the extra oil cooler which opens up when in Sport mode will also open when you reach a certain RPM in Normal mode so as to once again cool the oil some more when driving sportily but choosing not to (or forgetting to) press the Sport button. I've yet to have this confirmed by Porsche.
Lower temperatures always sound like a good idea but engines run better when hot, within reason and designed limits.
When you press Sport, the car knows you're intention is to press on and so lowers the oil temp so as to offset the higher temperatures anticipated.
I'm no expert, but logic suggests that driving normally with Sport pressed isn't what the designers had in mind. I think they assume that if you press Sport you ARE going to be driving sportily.
I've also read somewhere that the extra oil cooler which opens up when in Sport mode will also open when you reach a certain RPM in Normal mode so as to once again cool the oil some more when driving sportily but choosing not to (or forgetting to) press the Sport button. I've yet to have this confirmed by Porsche.
Lower temperatures always sound like a good idea but engines run better when hot, within reason and designed limits.
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