[tkwalker]

The onboard oil tank located on the power head is to preheat the oil for winter time use ... In the earlier days when oil injection first came out OMC smoked a lot of motors do to the cold oil and it would not flow properly to the injectors .... (This is what started the mix your on and don't trust the injector system) This has pretty much been fixed and improved ...

Now days I think just the smallier outboards (100 HP and below) use the power head reservoir, Which is the only oil injector reservoir on the motor.. most are supplied from an oil tank located in the bilge ... Also alarm systems and auto shut off has been introduced for back up safety devices on some motors ... The oil ratio has not changed since 1960 ... 50:1 ... Your injector systems are metered to supply the correct amount ... Note ... Some Yamaha's are 100:1 ...

Look in the bilge and you should find the oil tank ... If not the injector has stopped working and it is being fed via manual mixing to the tank ...

Hope this helps .... <'TK><