I have a 2004 Porsche cayenne S. My temp gauge is a bit 2 the right. when at high speeds it moves back to middle. The car also smells like coolant but no leak. About 2 months ago my coolant level light turned on, i mistakenly added prestone all vehicles coolant. The coolant level seems to go down a bit every week. I add about a quart of porsche coolant every 2 weeks since then. What should i do? the car is not overheating

thanks

 

It may not be overheating but its giving every sign that it is leaking slowly. It could be something as simple as a poor pressure cap on the system . . . or worse.

I'd do the obvious: open the hood, look closely for leaks, but frankly, take it to a shop and have them do the diagnosis.

Problems like this never fix themselves and tend to get worse slowly until the moment they just let go entirely.

 

ok thanks.
im gonna take it 2 shop next week.