In addition to this great video, here is an article from Truck Trend showing an installation on a 2002 Chevrolet Duramax.  Click here to see it!!

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Every once in a while, I get asked a question about lubrication that I do not know the answer to.  That happened to me just this week.  A contractor called me that builds, installs and services bi-fold doors for buildings such as airport hangers.  They were in need of a gear oil for the Cleveland gear boxes that drive the opening/closing mechanisms on these doors.  About the only information that I had to go on was that they needed a 140 weight gear oil and that the gear boxes were made by Cleveland.  My initial thought was: "AMSOIL has a 75/140 severe gear oil.  I would think that should work."  My second thought was: "I'm really not sure if the 75/140 is the correct oil, I better call Tech Services."  Boy, am I glad that I did!!  I found out that the 75/140, while being an extreme pressure lubricant (I thought that would be a good thing) that EP additive package is chemically harmful to the gears in this type of gearbox.  While talking to Tech Services, I was given a list of additional questions that needed to be asked.  I called the contractor back and got the additional information.  Turns out that this Cleveland gear box is a worm drive unit that has a lot of yellow metal parts inside it.  Parts made out of bronze, brass, etc.  Those parts are not compatible with the EP additives in the Severe Gear line of gear oils.  Tech Services pointed me in the right direction, though.  AMSOIL's RC line of industrial lubricants fit the bill.  These lubricants were born and bred from AMSOIL's dominate position in the wind power market.  Made for extreme service, long life and equipment longevity, these lubricants are exactly what this Cleveland M5213DAH50A-S gear box needs! 

AMSOIL Tech Services is available to everyone!!  Give them a call at (715) 399-8324 or email them at tech@amsoil.com with any lubrication questions that you may have.  They will assist you in finding the absolute best choice in AMSOIL products for your application.  They are very knowledgeable and don't treat you like you are wasting their time!