Well the other day I went to check it, and the plastic broke apart, so now I had to renew it.
I ordered one from the main stealer, and was very pleased with it, as it was now a good secure fit in the dipstick tube.
Although I saved the best bit for last, because it only cost approx £5.00.
The part no is 1174.22
Note using one from a scrap yard was not an option, as they could also have aged, and crumbled away.
So, if you have problems with your dipstick (the one in the engine bay, & not the other things, or people that spring to mind
Then change your dipstick it was a main stealer purchase for me that was a very pleasant surprise for its good value, not something you normally get from a main stealer!
