Re: johnson j40elcd
VRO means variable ratio oiling, Sid. You put oil in a seperate tank and the fuel pump automatically mixes it with the fuel.
First, find out if the VRO system has been disabled. If it has you will need to mix your fuel. Many VRO engines have had the VRO feature disabled.
If the VRO system is still connected, put oil in the oil tank but also use premixed fuel (50:1) until you can determine that the VRO is working and using oil from the oil tank. Your engine may be running a 25:1 mix while you are doing this test, but it will not harm the engine to have more oil than it needs. Having less oil than it needs might destroy it.
After running a tank of premix fuel and determining that the VRO is adding oil (mark the oil tank before you start and look for it to use about a pint while you burn one 6 gallon tank of gas) you can stop premixing the gas.
Good luck.
