I must admit the diesel mount being softer and as reported by most people as a lot easier to fit was always more likely to wear faster and come back out easier.Maybe there should be some bonding compound Inserted to prevent it coming out,or expanding foam?
Anyways the yellow mount being harder compound and harder to get in in the first place should stand a better chance of staying putt.It seems powerflex have adapted my man in a shed modification to reduce vibration on tick over
I only trialled my yellow mount a couple of months and cannot say if it would last better than the oe mount but there was no sign of wear when I swapped back to an original fitting for the 1.8T.