1,300 miles & ran over a nail. Fortunately I put air in the tire (did not use the rescue pump and sealer). Drove the car to my dealer who fixed the flat ($18). He informed me ( confirmed in owners manual) if I had used the sealant, the tire stem and TPMS would have to be replaced ( est $200). I did some research (Googled) "Slime" sealant and the Slime website says they have a Rescue Pump w/sealant that is approved for use with TPMS (tire pressure monitoring systems). I checked mine and it's a Ford Motor product not Slime. I'm now looking for a spare tire kit, in case lightening strikes twice. I can't remember when I've had a flat prior to this one.