So Far so good with no leaks. I found this chart Berghof/America: Chemical Resistance Chart
listing chemical resistance of various materials including PVC. I think the PVC Cement, as it is called is of bigger concern than the PVC itself. To join PVC you should first use the "cleaner", witch softens the PVC, and then apply the cement. Once joined you have about 3 seconds for adjustment before the joint is rock solid. As good as that is, I still don't know how well the PVC cement withstands constant exposure to Gasoline.