"Joe" wrote in message
...
It "used" to be that way but they found too many dead motors even by
OMC
standards:-) They changed it to a constant 50 to 60 to 1 ages ago &
changed the
name of course being OMC & all. It's still the same defective system it
always
was.


Sorry K, but a 1990 VRO works between 150 to 1, and 50 to 1 as I stated.


Again if your OMC doesn't consume oil at at least the rate of 50 to 1
then
have the VRO disconnected & mix tcw3 in the tank at that rate.



The 1990 VRO ran a wide variable ratio, just as Joe stated. There was no
recall on the pump or any of the pumps. The original version, 19 years ago,
did not have a NO OIL alarm system and the factory offered a deal to upgrade
an original pump to an alarm equippped pump, called VRO 2..

In '92, the pump parts were changed to run a richer idle to give more rust
protection to the motor's internals, high speed mixture stayed the same
50:1. It was called the OMS pump for oil metering system and could be
identified by the blue-grey outlet fitting, The OMS still varied the mixture
from 75:1 at idle to 50:1 at high speeds. In average use an owner would see
about a 60:1 ratio, depending on the amount of time at different speeds. It
is used today on 2004 motors and is designed to be rebuildable, instead of
replaced as a complete assembly.

Almost 20 years later it is still in production and working OK, The only
maintenance needed is the same as your boat's fuel system, make sure hoses
and clamps are OK and that water does not get into the tank.

The hysteria over VRO is from the uneducated "mechanics" that do not know or
understand the system, or from folks who "think" they know something because
they heard it from their neighbor's best friend's cousin's brother-in-law.

Bill Grannis
service manager