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Oil questions: How low should level get before top-off & Can you mix brands/viscosity

 
Old 01-16-2018, 10:33 AM
  #31  
BlueNorther
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Originally Posted by Valvefloat991 View Post
Exactly right, there is some five liters of oil that doesn't drain when you change the oil. So you're going to be mixing no matter what.

5 liters?? Where is 1.3 gallons of oil holding out??
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Old 01-16-2018, 10:51 AM
  #32  
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Originally Posted by BlueNorther View Post
5 liters?? Where is 1.3 gallons of oil holding out??
The lubrication system of this engine has been described as an "internal dry sump." I think that's where the oil is. The source of this info is the English press kit:

Engine: 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
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Old 01-16-2018, 10:55 AM
  #33  
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Originally Posted by BlueNorther View Post
What's a dipstick?

LOL
Kind of like a henway
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Old 01-16-2018, 11:34 AM
  #34  
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Originally Posted by Valvefloat991 View Post
The lubrication system of this engine has been described as an "internal dry sump." ...
Thanks, informative
My ignorance amazes me...
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Old 01-16-2018, 12:57 PM
  #35  
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Originally Posted by Valvefloat991 View Post
The lubrication system of this engine has been described as an "internal dry sump." I think that's where the oil is. The source of this info is the English press kit:

Engine: 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
The Blackstone guy told me it takes a number of oil changes to get all the break in metal out of the oil. If the above is actually the case that would make a lot of sense.
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Old 01-16-2018, 05:19 PM
  #36  
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Originally Posted by RDCR View Post
The Blackstone guy told me it takes a number of oil changes to get all the break in metal out of the oil. If the above is actually the case that would make a lot of sense.
Hence the desirability of at least one early oil change. I did mine around 1500 miles.
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Old 01-16-2018, 08:25 PM
  #37  
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I am at 5829 miles which includes 5 full track days. A Track day is around 165-180 miles. So around 800-850 track miles.

I did an oil change at 2000 miles miles and then just this weekend at 5768 miles. I will probably have 1-2 more track days before it hits 10k miles when I will then let the dealer do the oil change most likely. My filter has looked good with no metal shavings I could see. Car has burned any oil at all. I am using Mobil 1 5w50 advanced full synthetic.

I let the oil drain for 3-4 hours after its sat all night. I takes 9qts to get the oil gauge to show mid way to just above mid way in the green on the oil level indicator. 2017 Carrera GTS.
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Old 01-16-2018, 08:31 PM
  #38  
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I'm not sure it makes much sense to spend more than the recommended hour for draining the warm oil if 1.3 Gallons (!) are going to be left behind anyway...

Nor does it make much sense to keep the level "topped up" as I've done in the past, with that kind of reserve.
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Old 01-16-2018, 11:27 PM
  #39  
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Originally Posted by BlueNorther View Post
I'm not sure it makes much sense to spend more than the recommended hour for draining the warm oil if 1.3 Gallons (!) are going to be left behind anyway...

Nor does it make much sense to keep the level "topped up" as I've done in the past, with that kind of reserve.
It's not exactly a reserve. that oil is used in normal operation. And if your oil level is down and you are engaged in continuous, vigorous cornering, the level might possibly get low enough to produce starvation. So I would certainly respect any low oil level warning you get. Unless, an oil change is on the near horizon and you plan to only drive on freeways until then.
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Old 01-17-2018, 10:40 AM
  #40  
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FYI from our friend Larry:

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Old 01-18-2018, 12:43 PM
  #41  
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Originally Posted by RDCR View Post
Where's Jake Raby when you need him?
His forum days are over.. He's enjoying time in the lab, and building the things as his primary focus. After 20 years we all believe that he rates this. :-)
I'm happy to answer any questions about the DT40 from a development, and compatibility perspective.
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Old 01-18-2018, 12:45 PM
  #42  
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Lets just sum this up.... If you are in doubt at all. Just change your oil. Simple. Done.

I recommend the factory recommendation - YMMV and some people feel very strongly about this. Make good choices.
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