no 5w30 if using the ELF/Total engine oil.
remember different oils meet different standards, the ELF/Total engine oil 5w30 is made SPECIFICALLY with the rotary engine in mind when using the OMP
Mazda recommends 5w40 in the piston cars when using the ELF/Total oil
Remember ELF/Total was born in F1 and is used in Rally cars and F1 cars still to this ay..
Here is some proof
Rally cars:
F1 cars: