Idemitsu oils

[Primus]

Idemitsu is one of the main suppliers to OEMs and not only in Japan. Quite rare in Europe, but those who had managed to try always gave very good reviews. Interesting that Idemitsu oils are aslo available in the US. If to believe EOLCS Licensee Directory, Idemitsu USA also makes Honda oils for N.A.market. Would be really interesting if we could gather more info about these oils:

Idemitsu oils

 

[GMorg]

Thanks to HRD, here is a VOA for a racing formulation:

http://theoildrop.server101.com/forums/s...true#Post474618

Terry has posted a UOA for what appears to be an Idemitsu factor fill:

http://theoildrop.server101.com/forums/s...true#Post252695

 

[Primus]

GMorg,
Thanks a lot for the links. I've missed these posts. Quite strange that Idemitsu published the info on the rotary engine oil grades only. But their Racing Rotary 10W-30 PDS are very promissive:

http://www.apolloamerica.com/images/specsheet10w30.pdf

If to look at VOA, there is an impression that Idemitsu chemists use a different philosophy for cooking the oil: low calcium, phosphorus and zinc are backed up by polyesters, boron and high moly. Not sure this is exclusively cause of rotary engine in focus.

 

[Primus]

Trying to find out who supplies whom in Japan what I could discover:

HONDA
ULTRA GOLD SM motor oil 5W-40 ............................. Shinihon Sekiyou Co. Ltd, Tokyo
ULTRA MILD SM motor oil 10W-30
MTF-II ULTRA

ULTRA LEO SM 0W-20 ........................................... Idemitsu Kosan Co. Ltd, Tokyo
ULTRA LTD SM 5W-30
MUGEN REV-R 5W-40
DPSF DUAL PUMP SYSTEM FLUID ULTRA
PSF-II POWER STEERING FLUID ULTRA

HONDA GENUINE HG 5W-30 ADVANCED PROTECTION ... ExxonMobil Yugen Kaisha Co. Ltd, Tokyo
ATF Z1 ULTRA ..................................................... Nisseki Mitsubishi Co. Ltd, Tokyo
HGO-III ULTRA HYPOID GEAR OIL GL-5 SAE 90

MAZDA
MAZDA ATF M-III ................................................. Showa Shell Sekiju Co. Ltd, Tokyo

MITSUBISHI
DiaQueenn ATF SP III ........................................... Shinihon Sekiyou Co. Ltd, Tokyo

NISSAN
NISSAN ENDURANCE 10W-50 SM ............................. Showa Shell Sekiju Co. Ltd, Tokyo
NISSAN STRONG SAVE-X OW-20 SL
NISSAN MOTOR OIL EXTRA SAVE-X 10W-30 SJ
NISSAN CVT FLUID NS-1

NISSAN ATF Matic Fluid D ...................................... Idemitsu Kosan Co. Ltd, Tokyo
Brake Fluid NO.2500 NR-3 ....................................... Shinihon Sekiyou Co. Ltd, Tokyo

SUBARU
SUBARU MOTOR OIL SM 5W-30 .............................. Idemitsu Kosan Co. Ltd, Tokyo
SUBARU i-CVT

TOYOTA
CASTLE MOTOR OIL SM 10W-30 ............................. ? ExxonMobil Yugen Kaisha Co. Ltd, Tokyo ?
CASTLE MOTOR OIL SM OW-20

CASTLE MOTOR OIL SM 5W-30 ............................... ExxonMobil Yugen Kaisha Co. Ltd, Tokyo
CVT FLUID TC

The list of oils and fluids was much wider, but their manufacturers were not specified.

 

[GMorg]

Your assembling quite a list there...

 

[GMorg]

Sorry, "You're assembling quite a list there..."