Our Yamaha EF2000is inverter generator jut turned 600 hours. Last week I did an oil change and as usual, the oil was down approx. 2.5 to 3 oz. Which has been the normal consumption rate for every 30 hours of use.
I was getting low on the 5W50 Castrol Edge synthetic so I decided that if the generator is using oil at that rate, I might as well just use whatever I have around that's suitable for the purpose. I had about 1.5 quarts/liters of 5W50 left in the jug. I found a quart of Tech 2000 15W40 and blended it with the 5W50. I used the blend for a full 400 ml. (13.5 oz) fill and cleaned the spark plug.
A few days later, I was refueling the generator and did my usual 30 hr. oil check. The oil level had not dropped? The machine is getting close to 40 hours since the last oil change and oil consumption still remains stable. I've also been checking the exhaust pipe for oil residue and it's also stopped. When the machine was using oil, there would always be a drop of clean oil hanging at the end of the pipe.
So, the big mystery is..... Has the machine finally broken in properly or did the oil blend contribute to less oil consumption? I guess I could go back to using straight 5W50 synthetic on the next change to see if oil consumption goes back up.
What do you folks think?
I was getting low on the 5W50 Castrol Edge synthetic so I decided that if the generator is using oil at that rate, I might as well just use whatever I have around that's suitable for the purpose. I had about 1.5 quarts/liters of 5W50 left in the jug. I found a quart of Tech 2000 15W40 and blended it with the 5W50. I used the blend for a full 400 ml. (13.5 oz) fill and cleaned the spark plug.
A few days later, I was refueling the generator and did my usual 30 hr. oil check. The oil level had not dropped? The machine is getting close to 40 hours since the last oil change and oil consumption still remains stable. I've also been checking the exhaust pipe for oil residue and it's also stopped. When the machine was using oil, there would always be a drop of clean oil hanging at the end of the pipe.
So, the big mystery is..... Has the machine finally broken in properly or did the oil blend contribute to less oil consumption? I guess I could go back to using straight 5W50 synthetic on the next change to see if oil consumption goes back up.
What do you folks think?