It will be safe to drive as long as You keep Yourself aware of the Expansion Tanks

Fluid Level & check it only when the Eng has had time to cool to ambient temp or close ~

If You do happen to look @ it when Hot & it is not Full You should most definitely Let It

Cool & Top It Up ~ 

        Be sure to check the Hose Connection @ the bottom of the overflow tank to be sure

that You don’t just a Bad Hose ~ Also, If You happen to have too much fluid is the system

& do a drive that heats the Eng’ up a bunch, the overflow tank can get full & fluid will then

spill out of the breather hole on its top & make a person think they have a leak when a big

cloud of white “smoke” billows out of the back of the Van ~

  

> On 26 Feb , 2023, at 2:28 PM, Dan N <dn92610@GMAIL.COM> wrote:
> 
> hi all,
> 
> I understand how the coolant system works on a vanagon... but I have a
> question.
> 
> If during a trip the overflow reservoir cracks and leaks out coolant. Is it
> safe to drive with a defective overflow reservoir? (the expansion reservoir
> is full)...  If not safe, what are the consequences?
> 
> thank you,
> 
> dan