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Seems like your car is ok. Only if you flush all your coolant and change it will be better.

I agree, to clean and monitor also.

Wash the car as often as possible. Before you begin washing the car, ensure it's out of direct daylight. To start with, hose off any gathered dirt. At that point, utilizing a delicate cotton glove and a delicate car chemical, give the car a shower. In the event that there are zones where obstinate street tar or bug splatter won't fall off effectively, utilize an auto itemizing dirt bar to expel the stores securely so you don't scratch it. At the point when the outside is perfect, flush it to evacuate any cleaning item deposit. Apply a high-quality wax. There's nothing superior to anything a shower and hand drying took after by a rich layer of wax. Waxing is done to avoid sun harm to auto paint from bright radiation and help stop contamination, coarseness, and soil from holding fast to the complete and causing setting.

I agree with desertdude, that there is no such need for the tarmac based climb to switch to Tiptronic, let D handle and manage the downshift and upshift as required. This way RPM and gear fluctuation will help let engine and tranny to breath and use the entire range of gears. Secondly, it was good that you were keeping an eye on heat gauge and pulled over before car dies of its own. As 90 out of 100 times if the car dies of its own means irreparable damage to engine head and head gasket been done. To know now if your engine head gasket is damaged or not check for below things in the sequence of severity: Any loss of power in any gear or quick throttle response has reduced? Any white smoke is appearing from the exhaust while engine reached it's operating temperature? Has engine oil or coolant turned milky or sticky or appear different than it's usual color?