My express was running a little rough, and I wondered if the oil injection system could be at fault. In order to be safe, I filled the regular oil tank, then added 1oz to the fuel as well. It's running really well ( other then the smoke which I expected) I've got it up to 30 mph stock and I tip the scales at 220! I thought I'd run the extra oil for a few miles to lube it up really well, then drain and refill at regular ratios. Am I right in thinking extra oil won't hurt the engine as opposed to no enough? Thank You for this and all your responses!