Part of that really depends on the choice of hoses. For the fuel hoses the good stuff will go a real long time. If it was aftermarket most likely 5 to 7 years is a reasonable limit. Most important is regular inspection and checking of the hoses at the connections. If no signs of cracking, checking, hardening, or swelling they are likely good. When checking the ends you want to look carefully at the hose where it is pushed over the connection and under the clamps. 

Dennis

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of David McNeely
Sent: Saturday, April 30, 2016 3:28 PM
To: vanagon@GERRY.VANAGON.COM
Subject: preventative maintenance

Just wondering about some things.  When I go my beast 8 years ago, I did some safety related and other preventative maintainance jobs, including redoing the fuel hoses and the coolant hoses.

When do I need to do those again?  Just as they deteriorated while the POs had the vehicle, they go bad while I have it.  How soon?  I want neither a fire nor a fried engine.

mcneely