Keep OEM oil injection system or remove and pre-mix??

sunbird 18

Petty Officer 3rd Class
Joined
May 19, 2008
Messages
78
94 Carbed 250. I am currently using the OEM oil injection system.
1) How reliable are these systems?
2) Keep it or remove it and premix?
3) Why?
What are your thoughts?
 

cousinabe

Senior Chief Petty Officer
Joined
Nov 13, 2001
Messages
765
Re: Keep OEM oil injection system or remove and pre-mix??

There are a few good posts on the OEM oiling system. You can do a forum search to find some great information.
I personally think they are very reliable if properly maintained.

Not knowing exactly what model number you have, here is some general info on the oiling system. The modele number is located on the port side of the motor bracket.

the oiling system is very reliable,if correctly maintained.
that also means periodic maint and testing of the alarm system.
a simple quick test of the oil alarm and transfer rate can be done.
insure the remote tank is at least 1/2 full, turn the key on engine off, remove the engine oil tank water trap and allow the tank to drain into a suitable container. about 1" below the low mark the alarm should sound,3 bars flash on the tach and the transfer pump kicks on. with the key still on reinstall the water trap and time how long it takes to almost refill the tank.
transfer pump will run for 180 seconds and should have the engine tank about 2/3rds full at a minimum.

remember all the 3 position switch on the engine tank does is command pump ON, pump OFF and if the level drops to far the bottom switch(SW3) simply commands the alarm ON and RPM reduction.
the normally closed switch in the remote tank simply alerts the operator that there is enough oil for automatic transfer. if the switch opens or a wire breaks then the yellow lamp or center bar is lit and automatic oil transfer is inhibited.
for all normal oil transfer functions, other than the above alarm test, the engine must be running for automatic transfer.

You should make sure the remote oil tank filter is clear of debris to prevent any oil transfer problems.
also, you should check the oil linkage to make sure it's in spec. This can be found in the link and synch section of the service manual.
 

BaileysBoat

Senior Chief Petty Officer
Joined
Sep 29, 2008
Messages
716
Re: Keep OEM oil injection system or remove and pre-mix??

I would keep it. My 1988 Pro 50 has worked flawlessly for 20 years.
 

noelm

Senior Chief Petty Officer
Joined
Mar 8, 2005
Messages
761
Re: Keep OEM oil injection system or remove and pre-mix??

I reckon there is only one answer to this, KEEP IT! far better for you, your Motor, and the waterways/air.
 
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