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Rotax B box

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olendorf

Joined: 06 Jul 2006
Posts: 140
Location: Schenectady, NY USA

Posted: Fri Jan 05, 2007 5:54 am Post subject: Rotax B box

What oil do you guys use in your "B" box?   Everywhere I read 90w gear oil but the Rotax manual says: Gear Oil, API-GL5 or GLSAE 140EP or 85 W - 140 EP.   



I was initially using 80w-90 like CPS and others sell for this purpose.  But I have changed over to 85W140 Gear Oil.   I didn't see any difference.  What do you think?

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_________________
Scott Olendorf
Original Firestar, Rotax 447, Powerfin prop
Schenectady, NY
http://sites.google.com/site/kolbfirestar/

Richard Pike

Joined: 09 Jan 2006
Posts: 1671
Location: Blountville, Tennessee

Posted: Fri Jan 05, 2007 8:50 am Post subject: Rotax B box

Since I went to Mobil 1 synthetic gear lube, I haven't had any metal dust 

show up on the little magnet on the drain hole. Always had dust with regular 

gear oil, regardless of oil weight. I think that makes a difference.

Richard Pike

MKIII N420P (420ldPoops)

Rotax 582, B box, 2.58:1 ratio, 2 blade 68" Ivoprop

---

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_________________
Richard Pike
Kolb MKIII N420P (420ldPoops)
Kingsport, TN 3TN0

Forgiving is tough, being forgiven is wonderful, and God's grace really is amazing.

ul15rhb(at)juno.com
Guest

Posted: Fri Jan 05, 2007 9:57 am Post subject: Rotax B box

I agree with Richard. Mobil 1 synthetic gear oil is the way to go. 

Even after a year, it's still clear with no filings on the drain plug 

magnet.



Ralph

Original Firestar

20 years flying it

N91493



-- "Richard Pike" <richard(at)bcchapel.org> wrote:




Since I went to Mobil 1 synthetic gear lube, I haven't had any metal 

dust 

show up on the little magnet on the drain hole. Always had dust with 

regular 

gear oil, regardless of oil weight. I think that makes a difference.

Richard Pike

MKIII N420P (420ldPoops)

Rotax 582, B box, 2.58:1 ratio, 2 blade 68" Ivoprop

---

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Eugene Zimmerman

Joined: 10 Jan 2006
Posts: 392

Posted: Fri Jan 05, 2007 10:38 am Post subject: Rotax B box

Does anyone have experience with Mobil 1 synthetic gear oil and the E- 

gear box?

Does the superior lubrication of the synthetic oil ever keep the  

starter sprag from engaging properly?

On Jan 5, 2007, at 5:54 PM, Ralph wrote:



[quote] 



 I agree with Richard. Mobil 1 synthetic gear oil is the way to go.

 Even after a year, it's still clear with no filings on the drain plug

 magnet.



 Ralph

 Original Firestar

 20 years flying it

 N91493



 -- "Richard Pike" <richard(at)bcchapel.org> wrote:

 



 Since I went to Mobil 1 synthetic gear lube, I haven't had any metal

 dust

 show up on the little magnet on the drain hole. Always had dust with

 regular

 gear oil, regardless of oil weight. I think that makes a difference.

 Richard Pike

 MKIII N420P (420ldPoops)

 Rotax 582, B box, 2.58:1 ratio, 2 blade 68" Ivoprop

 ---

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HShack(at)aol.com
Guest

Posted: Fri Jan 05, 2007 10:58 am Post subject: Rotax B box

In a message dated 1/5/2007 8:55:39 AM Eastern Standard Time, olendorf(at)gmail.com writes:

  	  Quote: 	
		  85 W - 140 EP.   	


  

 I get that weight  [or close to it] at almost any auto parts house.  Valvoline, full synthetic.  Never see any debris on the little magnet.



  

 Howard Shackleford

FS II

SC

  [quote][b]

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olendorf

Joined: 06 Jul 2006
Posts: 140
Location: Schenectady, NY USA

Posted: Fri Jan 05, 2007 8:56 pm Post subject: Re: Rotax B box

I guess I'll stick with the 85w-140. Synthetic seems like the way to go.



Thanks.

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_________________
Scott Olendorf
Original Firestar, Rotax 447, Powerfin prop
Schenectady, NY
http://sites.google.com/site/kolbfirestar/

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