Most modern engine deigns have utilized aluminum blocks and heads for many years. However, the actual working parts of the motor are still steel. Crank shafts, camshafts, valves, are all still hardened steel. Pistons have been made of alumnum for the last 60 years.
Auto-Rx sees an aluminum motor no differently than a cast iron block.
Auto-Rx works perfectly fine in aluminum motors. That would be 99% of the Auto-Rx business. So I am not sure where you get information that Auto-Rx does not work well in aluminum engines. That is totally false.
I would recommend starting your Auto-Rx application today.
