Tier1Terrier

Suppose you go on frequent long highway drive (100+ miles) at a mostly constant speed of around 80mph. Do you leave it in Normal mode where the engine runs significantly hotter at temperatures exceeding 230F or do you run in Sport or Sport+ mode to keep the engine running cooler at around 195F?

justabout

No. I put my faith in the engineers who set the operating parameters. If I was concerned about oil viscosity, 5w-50 would be used instead of the recommended 0w 40.

CSK 911 C4S

Run in any mode you want. Unless you over heat you are good to go.

CayenneBlack

I’m sure these cars are engineered to drive under normal conditions and beyond. I wouldn’t worry about it. Go for the mode that fits you.

if you ever talk to your service advisor, ask him what kind of training he has done in the vehicles and where. After hearing those fantastic stories, you will be amazed what these cars can do.

asellus

I run in normal mode, mostly because better MPGs. Last weekend I did a few hundred miles, and today I'll be doing another 250, all freeway.

110c/230f is nothing. If you really want to panic, look at your coolant temps. You'll need an OBD2 reader for that, though, as the cluster will display 90c/194f until you're overheating. Ooh, or go drive a 2001 BMW 540i and look at the operating temps on that beastie.

As with above, there is no harm in doing this. In fact, it's arguably better for the car, what with the more efficient running. Regardless, it's operating within the ranges the car was engineered to operate within. Don't overthink it, just enjoy the car.

Lucky991

The engine will run at different temps based on Normal vs Sport mode? Some additional cooling not running in Normal mode?

Ksdaoski

Yup. Higher temps result in better MPG for everyday street use. Sport and sport+ lower about 20-30, for elevated speed track usage or higher RPM usage.

BSO

The issue centers on the Carrera automated cooling flaps on the front of the radiators. On "O" the flaps remain closed for an aerodynamic gas mileage advantage but increased temps.

On "Sport" or "Sport+" the flaps stay open and allow more air flow and cooling but increases drag.

asellus

Not quite that simple -- it's a German car, after all, why would it be?

Sport+ will open them (with PSM in sport or off, from how I'm reading this). Otherwise they are open based on thermal demand or vehicle speed. In most situations, they are always open.

Per the SIT:

BSO

Thanks for the above clarification. My observations were based on what I saw while driving the car where the temps in "Sport" and "Sport+" were always lower than on "0".

Don't drive in "0" at all, "Sport" is my default.

Some time in the past I considered deleting the flaps but the above information clearly indicates that the system is complex and should be left alone.

polobai

I deleted my flaps 2+ years ago and have no issues-be sure to leave the motor in place and remove the flaps. If the gts doesn’t use it and the base/t cars can be optioned with the sport design front bumper, it should pose no issue with cooling.