I have a mechanical gauge, no problems, it won't leak at all if you do it right, i had a shop do mine because i didn't know where to mount it but they did a very good job, plus if it ever des leak they get to clean and repair it for no cost.
~Alex
Ex- SVT Driver627
MUST SELL!!!LOCAL:
Pre-98 MOLDED trunk
Polk db speakers
Corolla parts
LED Underbody Kit
PM
2000 Green CSVT gone on 2/17/06
2001 Toyota Corolla (SHE RUNS!!!)
1989 Mustang LX 5.0