I have been running Cool Power 10% in my engines ever since I have owned them. On my last trip to the LHS, I inadvertently purchased Cool Power 15% instead of 10%.

Can I just switch to the 15% and be ok? I know that when you switch brands of fuel, you are suppose to re-break in the engine, but I'm not sure about switching just the nitro content of the same brand.

I have been thinking about upping the nitro content anyways, so I suppose now is as good a time as any.

Thanks for the input!