Engine oil IDEMITSU or OEM BMW

Original BMW 5w30 LL04. I'm sure other brands with the same specifications will be perfectly fine as well though.

I use Idemitsu Wankel Racing Oil. 10w30, I think.

Idemitsu all day. It’s synthetic but what needs to be emphasized is the ingredient blend is purpose designed for a rotary to make the right lube + burn.

I've been running that exact oil in my rx8 for about 1k km now and its still as smooth as ever

i am of the mindset of using oil from the region. my GTI is a german car and gets liquimoly, a german oil. my toyota/subaru is Japanese, Idemitsu is a japanese oil (and the oem supplier for Subaru). i have 5w30 in it now.

I've been running Idemitsu oil in the XT and the wife's Crosstrek for the last four and five years and have been happy with it.

You’ll be fine, idemitsu is a bit of a rotary specialist when it comes to fluids

I recommend checking your oil level at 3000 miles because some vehicles burn oil. BMW and Audi especially, at 1500~2000miles I will top off.

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

Been using the recommended bmw 5w-30 up until recently. However been having to top up 5L every month so the shop switched over to 10w-40 and I haven't seen that I needed to top up yet, but it has only been one and half months so far since the service.