Former VWDieselParts.com Forum

My WVO vacuum gauge system is now 7 years old. I used 1/4 inch clear urethane tubing to the gauge. It is about 5 feet long going from injector pump to dash board. Being clear tubing, I can see WVO all the way up to, and it must be inside, the vacuum gauge. The gauge, which is a cheap combination aut...

I suggest using small diameter polyurethane tubing, almost as easy as running a wire. Then, just connect it to an ordinary auto vacuum gage costing about $20. Polyurethane is extremely tough, will not collapse with a vacuum, WVO does not hurt it and it is readily available at reasonable cost.

I have been running WVO through clear polyurethane lines for about 7 years with no problems. It is a 2 tank system with the WVO being heated by the coolant.

In fact, part of the WVO heating system has the poly line co-axially inside the coolant line.

I installed a 2 tank WVO system in my 1982 VW 1.6L diesel pickup 7 year ago using clear polyurethane tubing. I have had no problems. It is easy to get and not expensive. And now, it has withstood the test of time. In fact part of my WVO heating system has the polyurethane tubing co-axially inside a ...