[noobytoogy]

You mention work and school trips. Are you only doing lots of short trips?

That's really not good for a Tdi as they need good runs to get them properly up to temperature.

 

[noobytoogy]

Define good run? my commute is 24 miles each way some stop go but mostly running about 45 to 50 mph for the bulk of it. Some highway high speed too but bulk is my commute of about 50 miles a day with that speed average

That kind of mileage will certainly warm the car up but whether it will keep your DPF clear, I don't know.

 

[noobytoogy]

Do NOT idle a Tdi like that. Get in it, start it and drive it. Engine wear will be at its peak during those 15 minutes.