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Old 08-20-2010, 10:22 AM   #1
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How often do you guys flush your differential gear oil?

every 2 years? 3 years?

fkloster = Fritz & Erin (& Lucy the Weim)
1991 Beaver Marquis 40' (1,225 ft. lbs. torque)
2011 JGC Overland Summit Toad / U.S Gear Brake
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Old 08-20-2010, 10:51 AM   #2
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As I recall, my chassis manual says every 24 months. Mine was changed after 3 years. It's been another 3.5 years, but I'm thinking of doing it again this winter. I have synthetic fluid in it.

Gary Brinck
2004 American Tradition; 2014 Buick LaCRosse
Homebase in the Ocala Nat'l Forest near Ocala, FL
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Old 08-21-2010, 02:58 AM   #3
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I also use synthetic and I think with the average mileage an RV does; every 3-5 years would be OK on changing the rear end lube.
Mike, RVIA & RVSA Certified Master RV Technician
Amy, Dr. Assistant - Roxie & Mei Ling, four legs each
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Old 08-21-2010, 04:08 AM   #4
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I believe mine doesn't time out, but is wear dated at 100,000 miles. I changed it out anyway at 5 years and 40,000miles. You can pull the fill plug at anytime to check its magnet for self destruct particles. Anything more than a little fine dust would be suspect.
04 Allegro 30DA, WH 8.1, Banks, 03 Honda CRV/2012 Jeep Liberty Jet, Brake Buddy Adv Select, 300watts Solar, 7 Group 31 Optima AGMs, 2000watt PSW inverter
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Old 08-21-2010, 09:45 AM   #5
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Did mine after the first year, then will do 2 years later, at this time will change to synthetic. Manufactures suggests 15K miles or annually, whichever occurs first.

"Those who stand for nothing fall for anything"
2008 Newmar VTDP - 3330 - ISBXT 350 Spartan NVS
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