I understand but I'm not going to risk it again on a poor design. Sure I'll take all the precautions you’re talking about but taking it one step further will guarantee you won't damage anything. What is your concern about leaving the dipstick as I described on a super cold morning?

Looks like someone else just posted with the problem. If I didn't do all my own work I would never keep this car. And BMW charging so much to repair it when it may not need those parts is a sin. Just offering some options, I'm sure some of the people who paid $2000 to repair it only to happen again wish the dipstick pushed out and not half the engine. In my case I got lucky it was the oil cap. There you go a better solution would be a pressurized oil cap like the coolant system. Too much pressure and it's released through the cap. Anything is better the current design and I'm a die hard BMW fan, I have three of them now, wouldn't replace any of them