You can repair small punctures with PVC cement, but the results will not be optimal. To repair a tire (inner tube), you need a solvent that will disolve a bit of the top layer of the rubber tube and the bottom layer of the patch. Then, as the solvent dries, the two, together with the added rubber in the rubber cement, become one. this gives a strong, flexible, air tight seal. The solvents in PVC cement fill the bill for disolving the rubber. But instead of a flexible rubber base, it's relatively inflexible PVC. Your repair will be air tight, but far less flexible than it would be with rubber cement. This may, in the long term, lead to stress failure at the edge of your patch.
PVC = polyvynlchloride
Semi-Rigid PVC
Yes.
With a PVC locator
No, it will not cause oil leaks.
Only if you have leaks or problems.
The vinyl liner should bond together with PVC glue from lowes or Home Depot. There is even a PVC liner that can be used with the glue to patch tears rips and holes.
PVC pipes are less expensive and easier to repair. Metal pipes are more expensive and more difficult to repair.
repair it or get a new one.
Pvc not properly put together or was not glued, Turn off main water supply cut out leaking area replace and put back together. Make sure you measure PVC so that you will purchase correct size.
I plan to caulk mine shut. THe repair estimate was $9k.
repair the leak
Find where it is running out and repair the cause.
Check out: www.innovativepipeliners.com
It is common practice here in Texas for commercial and residitual plumbing. Its hell for the repair plumber to locate gas leaks though.
You can buy an "underwater" PVC repair kit. Providing there are not too many holes, this is the easiest way to repair, as you do not have to drain the water. However, goggles and someone pressing down on your body (or lead weights), do assist to keep you below water, whilst you affix the patch and the underwater PVC repair kit. Dries almost immediately.