Subject: Finally oil formulated for the rotary.
From: ACRE
Date: 12/26/2004, 4:50 PM



          There was an ad in RX Tuner magazine this month by the
          company that supplied the synthetic oil used in the Lemans engine
          to win Lemans.

          Regular motor oil has a lot of additives that the rotary does not
          need. These additives just gum up the rotors and the apex seal slots.

          The companies web site is http://www.idemitsu-usa.com
          They also published an SAE 922375 paper on the subject.
          It uses polybutene as the base stock I think.

          I am ordering a case tomorrow and will replace the oil in the RX8 engine.
          They also have pre mix apex seal oil for the fuel.

          Paul Lamar

     Here is the results of a test Idemitsu ran on engine oils from SAE 922375.
     DI is an anti wear additive. This test is similar to the one we ran on oils
     a few years ago with similar results. We cooked the oil for 30 minutes at 500 F
     and they cooked the oil for 10 hours at 280 C or 536 F. Polyolester is turbine
     oil I think.

     The viscosity rating is a pour test where the volume of oil poured
     in unit time is measured.

     BTW according to this paper main and rotor bearings start to fail at 150 C or
     302 F. Apex seals run at 240 C to 280 C or 464 F or 536 F.

     Very very important to get the right oil to lube your apex seals.

     Paul Lamar


Brian Sieber wrote:


Mike at Idemitsu (Apollo America) sent me case a couple of months back. I should have my 13BT back together in the next couple of weeks and I'll be running their lubes. I'll let you know what I can.

Brian



Brian Sieber
President/Art Director
RX Tuner Magazine
brian@rxtuner.com
904.525.7371


I think the Mazda dealers should be forced to use this oil in the rotaries.
When I took my RX8 into Santa Monica Mazda for the 15,000 mile service they 
put cheap motor oil in it bought in 55 gallon drums I am sure. I requested 
Mobile One but they said no. Now I have to suck it out and replace it with 
the good stuff. Corvettes come with and use Mobile One.

Paul Lamar

 
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