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Today I decided to do my first oil change. First for my Carrera T, and first DIY for me too. It is not like I didn't know how to do an oil change, but on my previous vehicles either the oil changes were free (BMW), or I had a pre-paid service, or I didn't keep them long enough to get to their first oil change
But after driving my first 2,800 miles on the Carrera T, I thought it would be a good idea to change the oil after the break-in period, have some fun, and do a youtube video about it, as I could not find any related to the 991.2 Hope to post the video in a couple of days.
Now, the interesting thing is, almost all I've read says that a full oil/filter change would require 8 quarts (7.5 litters) of oil, And that the total capacity of the engine is around 10 quarts, so you always end up with 2 quarts of old oil lurking in the engine. Since I don't have a fancy lift, or 4 ramps, I used the 2 ramps I have to raise only the rear of the car. This tilted the car to the front, where the drain plug is located.
After letting the oil drain for well over an hour (went to lunch in the middle of the process), after replacing the filter, and re-filling with 8 quarts, the dashboard had a message saying that the oil level was too low.
I got a little worried, and added another 1/2 quart. After a few minutes I checked again, and it still showed that it needed nearly 3/4 more!
I decided to drive around the block to make sure the oil got warm and moved around before measuring again. And once again, it still showed I needed 3/4 of a quart. After adding 3/4 more, it is now showing a little bit under full. So, I am surprised that I ended up putting 9.25 quarts, and still could add a bit more. Which means that instead of leaving over 2 Qts of old oil in the engine, it looks like no more than 3/4 of a quart were left in there.
So, the moral of the story is: If you want to drain as much oil as possible next time you DIY an oil change, lift the rear of the vehicle!
By the way, I found out that it is cheaper to buy 10 Quarts of oil than 8! The cost for the 5 Qt bottle of Mobile 1 0W40 at Walmart is 22.89, while the 1 Qt. bottle is 7.89. So, the cost of the 3 Qts would be 23.67 vs 22.89 I'm glad I bought the 10 Qts, otherwise I would have to end up buying 2 more 1 Qt. bottles than I had anticipated!
Interesting. I thought there was a similar thread to this recently, I can't remember the details though. I have a 2017 C2S and changed mine during break-in period. I used the same method to drain as you did. As I recall it only took 8 to fill it back up.
Interesting. I thought there was a similar thread to this recently, I can't remember the details though. I have a 2017 C2S and changed mine during break-in period. I used the same method to drain as you did. As I recall it only took 8 to fill it back up.
So, just to confirm, did you just raised the rear of the car too? If so, how long did you let it drain? I left the oil fill cap off so it would drain easier, also while having the engine hot, not just from a quick drive, but oil temp was at over 200 degrees.
Yeah just raised the rear, fill cap off. I've changed a lot of oil recently and don't recall how warm it was. I likely let it drain for hours or over night. Unfortunately 4 oil changes 3 of them 911s and one a Cayenne I can't recall all details. I did do a Blackstone and captured the oil midway through the drain, that much I remember. It is likely the oil wasn't hot. I do know each time the rear deck is opened it makes you drive it before giving a reading. Not sure what I'm doing wrong there or if that is just a 991.2 thing to PO DIY'ers.
Yeah just raised the rear, fill cap off. I've changed a lot of oil recently and don't recall how warm it was. I likely let it drain for hours or over night. Unfortunately 4 oil changes 3 of them 911s and one a Cayenne I can't recall all details. I did do a Blackstone and captured the oil midway through the drain, that much I remember. It is likely the oil wasn't hot. I do know each time the rear deck is opened it makes you drive it before giving a reading. Not sure what I'm doing wrong there or if that is just a 991.2 thing to PO DIY'ers.
By the way, you just reminded me that I'm an idiot... I have ordered the blackstone box to send the sample back, and forgot to pour the oil in it. I will get it out of the container where I dumped the oil, but I don't know if that is going to show some weird stuff, as at one point I recall having poured gas on it by mistake...
You can just do it next change. If you did the so called 'proper' break-in you'll be fine to wait. My oil drain container has so much other crud in it I wouldn't take a sample from there.
Today I decided to do my first oil change. First for my Carrera T, and first DIY for me too. It is not like I didn't know how to do an oil change, but on my previous vehicles either the oil changes were free (BMW), or I had a pre-paid service, or I didn't keep them long enough to get to their first oil change
But after driving my first 2,800 miles on the Carrera T, I thought it would be a good idea to change the oil after the break-in period, have some fun, and do a youtube video about it, as I could not find any related to the 991.2 Hope to post the video in a couple of days.
Now, the interesting thing is, almost all I've read says that a full oil/filter change would require 8 quarts (7.5 litters) of oil, And that the total capacity of the engine is around 10 quarts, so you always end up with 2 quarts of old oil lurking in the engine. Since I don't have a fancy lift, or 4 ramps, I used the 2 ramps I have to raise only the rear of the car. This tilted the car to the front, where the drain plug is located.
After letting the oil drain for well over an hour (went to lunch in the middle of the process), after replacing the filter, and re-filling with 8 quarts, the dashboard had a message saying that the oil level was too low.
I got a little worried, and added another 1/2 quart. After a few minutes I checked again, and it still showed that it needed nearly 3/4 more!
I decided to drive around the block to make sure the oil got warm and moved around before measuring again. And once again, it still showed I needed 3/4 of a quart. After adding 3/4 more, it is now showing a little bit under full. So, I am surprised that I ended up putting 9.25 quarts, and still could add a bit more. Which means that instead of leaving over 2 Qts of old oil in the engine, it looks like no more than 3/4 of a quart were left in there.
So, the moral of the story is: If you want to drain as much oil as possible next time you DIY an oil change, lift the rear of the vehicle!
By the way, I found out that it is cheaper to buy 10 Quarts of oil than 8! The cost for the 5 Qt bottle of Mobile 1 0W40 at Walmart is 22.89, while the 1 Qt. bottle is 7.89. So, the cost of the 3 Qts would be 23.67 vs 22.89 I'm glad I bought the 10 Qts, otherwise I would have to end up buying 2 more 1 Qt. bottles than I had anticipated!
Oil nearly full with 9.25 Qts:
Car lifted with rear ramp:
You've still got a fair amount old oil left in the engine, though every bit helps.
Water-cooled flat-six engine; aluminium engine block and cylin -
der heads; four overhead camshafts, four valves per cylinder,
variable inlet and outlet valve timing; inlet valve lift (VarioCam
Plus); hydraulic valve clearance adjustment; direct petrol inject -
ion; bi-turbo charging; one three-way catalytic converter per cylin -
der bank, each with two oxygen sensors; engine oil 13.1 litres
(refill volume 8.0 litres); electronic ignition with solid-state igni -
tion distribution (six active ignition modules); thermal manage -
ment for coolant circulation; auto start/stop function.
Bore 91.0 mm
Stroke 76.4 mm
Displacement 2,981 cm3
Compression ratio 10:1
Engine power 370 hp (272 kW) at 6,500 rpm
Max. torque 450 Nm at 1,700 – 5,000 rpm
Power output per litre 124.1 hp/l (91.2 kW/l)
Max. engine speed 7,500 rpm
Fuel type super plus
So is the general consensus to change the oil after about 1k or 2k miles and then do the 10k service at the 10k/1 year mark?
Trying to understand if it’s a waste of money to do so or worth it?
I would not say it is "necessary" to do an oil change after break-in period, but considering the cost of the vehicle, the tight tolerances, and the fact that I may want to keep this car for a long time, I think that $80 (cost of oil, filter, plug, gasket) is a small price to pay for peace of mind.
I also think it is fun to do things like this by yourself to your car every now and then
Interesting. I thought there was a similar thread to this recently, I can't remember the details though. I have a 2017 C2S and changed mine during break-in period. I used the same method to drain as you did. As I recall it only took 8 to fill it back up.
07-07-2018, 09:23 PM
9.3 Quarts of oil on 991.2 oil change???
