"mm" > wrote in message
>
>>the new tanks with the OPD would shut off themselves in that condition.
>
> Really?

The OPD is a float that blocks the outlet. Thee is also a valve like the
one on a tire valve that must be pushed in. If the OPD gets forced tot he
top of the tank it will shut it off or severely cut down the amount of gas
escaping. If you wee able to knock it on its side it would be even better as
it is designed to stop leaks from a tank in your trunk that gets knocked
over.