is there a practical difference between multi spray and injector/spark plug loosener

Autogas

The autogas product range has been designed by industry experts to provide superior valve seat recession protection (VSRP) for your LPG powered vehicle.

Diesel

A comprehensive range of problem solvers and conditioners to not only combat DPF blockage but also other carbon related issues with e.g. turbo and EGR and air intake manifolds.

is there a practical difference between multi spray and injector/spark plug loosener