Engine oil OEM Honda or IDEMITSU

I change mine every 5K.

Worth the piece of mind to me considering it a turbo engine.

I do mine every 5k. It maybe adds one extra oil change a year for me, if that.

I've always put Honda GN4 in mine and whatever recommended weight stated in your manual :)

I think Idemitsu is the better option if you have access to it. Mostly because it was developed for the rotary engine.

Idemitsu to both, because it’s designed and tested on rotaries.

I use idemitsu rotary 20w50

I stick to Idemitsu. I have a Sohn adapter fitted, so it's 10-30 Idemitsu in the engine, twice a year and Idemitsu Premix in the Sohn adapter and in the fuel tank.

I don’t use the Mazda-branded version, but Idemitsu is my go-to oil in all of our Mazdas

Idemitsu is the only premix and engine oil I’ll use ... you can order it for a good price from TREx performance out of NJ and he will ship

Did the break in oil change at 750 miles on my FL5 and was shocked at how bad the oil was. If you took a bright light to it there was lots of fine metallic debris in there.