What do you guys use on the o-rings to help with the injector install.

Oil? Vaseline?

 

Motor oil.

 

alittle bit of clean motor oil

 

From "FIC's" website.

"Because of the position of the fuel injectors in relation to the fuel rail, extreme care should be taken during installation so as not to damage the o-ring seals. .
Always inspect the orings for damage before considering the injector itself to be defective.
Just prior to installation we recommend the use of Palmolive soap to lubricate the o-rings. Petroleum based products have chemicals that get absorbed in the o rings after a long period of time. The soap leaves no residue..
Use a rocking motion to install the oring in to the fuel rail and instake manifold. Never twist-in or "screw-in" the injector.
This may cause scoring or cutting of the oring."

 

The o-rings that go in the fuel rail are made of a different material than those used in the manifold. I, believe it or not, simply wet the fuel rail injectors with fuel before pushing them into the rail. They were made to resist fuel so it won't hurt them and the fuel provides the little bit of lubricity needed.

For the ring going into the manifold, I used good old vasoline....never had a problem.