Only slight advantages. With the drain you can bleed off the water accumulated as it is heavier than fuel. Secondly when you're changing fuel filters or any other reason to open the fuel sysytem on a fuel injected system where pressure is high, around 15psi and up, you can use the drain to relieve pressure before fuel system service. As far as changing it, as stated above, it should be serviced at the same intervals. IMHO, it's not worth the extra money.
|