Q: I always put in a little extra oil each time so I can be sure I'm protected or, there's always a little left so I just dump it in. Is this good for my motor/engine?
A: You should mix the fuel/oil ratio exactly as the manufacturer recommends. Adding too much oil could lead to early ring sticking, which can cause premature engine failure. The reverse of this is mixing the fuel/oil ratio on the light side. This will lead to the lack of proper lubrication, causing piston scuffing and in turn, excessive engine wear. No matter what type of environment your engine is operating in, always follow the manufacturer's recommended guidelines for fuel/oil mixing.
Q: I had engine damage judged to be from lack of lubrication.
Could it be the Variable Rate Oiling (VRO) system or the oil? Should I disconnect the VRO or change oil brands?
A: Probably neither. Most often there is a one-time occurrence of "no oil" or "too little oil" present. Oil itself would be a problem only if it were the wrong oil for the application. A fully approved oil used in the right ratio should lubricate properly regardless of brand or color. VRO systems can malfunction, but once repaired, are far more accurate, timely and precise in delivering a proper mix than any amount of time and effort you can put into the task. The return to a qualified oil and properly functioning VRO system is your best approach.
Q: What about synthetic two-cycle oils? Will I get better performance or extend the life of my engine?
A: Synthetic two-cycle oils have certain advantages and benefits over mineral based two-cycle oils. Synthetic two-cycle oils will have excellent low temperature flow properties ideal for winter time use. Synthetic oils are typically environmentally friendly as they are biodegradable and also meet the low aquatic toxicity standards. Synthetic two-cycle oils have a higher viscosity index over mineral oils, which means they burn cleaner, helping to reduce deposit build-up and spark plug fouling. Synthetic blends also have excellent low temperature flow properties. These oils also maintain a high viscosity, which helps reduce piston scuffing and bearing wear.
Q: My neighbor says he has always used "brand X" two-cycle oil and has never had a problem. My brother says he used "brand X" and had nothing but problems. Why is this? Who is right?