vs
Engine oil Motorex or IDEMITSU
I have always used Motorex. I have the same bike and 3 other KTM’s. Always Motorex. I know it is spendy but it’s very high quality
Pros: very high quality
Cons: it is spendy
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.
Pros: using oil from region
Vehicle:
Toyota
In my Shiver 750, Motul or Motorex every 3,500 miles were required to keep neutral findable when you want it and hidden when you don’t. False or impossible-to-find neutrals were a sign that it was time for an oil change.
Pros: findable neutral
Cons: impossible-to-find neutrals
Mileage: 3500 km
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.
Pros: happy with it
Vehicle:
Subaru Forester
You’ll be fine, idemitsu is a bit of a rotary specialist when it comes to fluids
Vehicle:
Mazda
Use an oil designed for a wet clutch, like this [motorex 15w50]
Pros: designed for wet clutch
I think Idemitsu is the better option if you have access to it. Mostly because it was developed for the rotary engine.
Pros: developed for rotary engine
Cons: hard to find
Idemitsu to both, because it’s designed and tested on rotaries.
Pros: designed for rotaries
I use idemitsu rotary 20w50
Honestly Motorex is a good oil, but it is extremely expensive for what you get. I specialize in performing Used Oil Analysis (Worked for Reliability departments for mining outfits) and it’s just a Ho Hum oil.
Pros: good oil
Cons: extremely expensive
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