A number of Yamaha 4-stroke riders commented on the lack of mention of the cost of injection oil and oil loss characteristics of 2-strokes...

A number of Yamaha 4-stroke riders commented on the lack of mention of the cost of injection oil and oil loss characteristics of 2-strokes vs. 4-strokes. One Yamaha RX Warrior rider stated, “A 2-stroke takes a quart of injection oil (expensive synthetic stuff now days) about every 90-150 miles. A Yamaha 4-stroke at most will burn 1 quart every 1,000 miles. Even when you factor in oil changes and filters, the cost of operation of an oil injection 2-stroke is much greater, even if the fuel economy is similar.” We agree that this is a valid point.

Another stated, With a 2-stroke, 100% of the oil is consumed, making it a 100% oil loss system. On a 4-stroke, even if you use a quart every 1,000-2,000 miles, the majority of the oil is captured during the oil change. The amount of lubricating oil being placed into the environment is much less. Another valid point.

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