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01-20-2020, 12:42 PM
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#1
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Senior Member
Tiffin Owners Club Spartan Chassis
Join Date: Mar 2019
Location: Fulltime - Plan to retire in Crystal River, FL
Posts: 390
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Diesel Axle Fluid Change - 2008 Allegro Bus
I have a 2008 42QRP with a Tag that I bought about 2 years ago. I was attending the Spartan seminar at the Tampa RV Show, and "Big Mike" told us that we needed to change the Gear Lube in each axle every year. The non drive axles don't take alot, but the drive axle is like 21 pints.
So, DP Owner's Question - How often do you change the gear lube in your axles? Do you have a different cycle for the non-drive axles?
Do you do this yourself or take it to a shop? THANKS!
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Nick & Peggy (US Navy, Retired) Full Time
2008 Tiffin Allegro Bus 42QRP Toad - 2016 Ford F150
AWOL - Adventures With the Old Lady
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01-20-2020, 01:35 PM
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#2
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Senior Member
Join Date: Aug 2013
Location: Canton, MI
Posts: 1,004
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Quote:
Originally Posted by pete5016
I have a 2008 42QRP with a Tag that I bought about 2 years ago. I was attending the Spartan seminar at the Tampa RV Show, and "Big Mike" told us that we needed to change the Gear Lube in each axle every year. The non drive axles don't take alot, but the drive axle is like 21 pints.
So, DP Owner's Question - How often do you change the gear lube in your axles? Do you have a different cycle for the non-drive axles?
Do you do this yourself or take it to a shop? THANKS!
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I changed mine. Dirty job. Not hard to do. It would be easier to do when it is warm out so the heavy gear oil will flow better. I won’t be changing every year. Sounds like overkill and the manufacturer looking for an excuse to deny a warranty claim. I might do a fluid analysis and change based on the results.
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Tigerfan1
2016 DSDP 4369, Freightliner Chassis, AF One brake system, 2016 Chevy Equinox
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01-20-2020, 07:10 PM
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#3
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Registered User
Join Date: Feb 2008
Posts: 3,607
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I don't know what hubs and rear ends Spartan is using, but I've found Tiffin has a lot of strange change intervals for their axle and hub lubes, and when I questioned them for my 2008 and 2013 Buses, I got inconsistent info. I ended up going under my bus, copying the data plate info for make and model and looking it up in the manufacturer's posted information on line. For example, my current Dana Spicer rear shows changes between 60,000 miles and 1 year and 500,000 miles and 5 years depending on use and lube used. From the horse's mouth, so to speak.
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01-20-2020, 07:25 PM
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#4
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Senior Member
Join Date: Jun 2018
Location: Shawnee OK
Posts: 757
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just one silly question? how often do you change out the differential fluid on the daily drivers
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2005 Journey 39F 350 hp Cat
Ex 99 Itasca 36’ 275 hp Cummins
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01-20-2020, 08:05 PM
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#5
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Registered User
Join Date: Oct 2016
Posts: 2,078
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Quote:
Originally Posted by Skiddy
just one silly question? how often do you change out the differential fluid on the daily drivers
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You already know, very likely never
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01-20-2020, 08:26 PM
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#6
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Senior Member
Damon Owners Club Freightliner Owners Club
Join Date: Feb 2019
Location: Minnesnowta
Posts: 396
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If you suspect it's the original fluid, I'd drain and fill with a good synthetic and then forget about it. I own a 1994 Mack with 1,250,000 miles that I drained once around year 2000, filled with synthetic and haven't touched it since. As long as it doesn't get contaminated it should last forever. For example, the Dana 44s on my Dodge Ram are sealed for life, no service intervals.
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Jeff & Kelly
2008 Damon Astoria 3776 PE
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01-21-2020, 07:50 AM
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#7
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Senior Member
Tiffin Owners Club Spartan Chassis
Join Date: Mar 2019
Location: Fulltime - Plan to retire in Crystal River, FL
Posts: 390
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Thanks for the feedback....replacing the fluid yearly appears to be an extreme overkill. I will plan on a 3 - 4 year cycle.
__________________
Nick & Peggy (US Navy, Retired) Full Time
2008 Tiffin Allegro Bus 42QRP Toad - 2016 Ford F150
AWOL - Adventures With the Old Lady
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01-21-2020, 07:54 AM
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#8
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Senior Member
Monaco Owners Club
Join Date: Jun 2014
Posts: 14,589
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Quote:
Originally Posted by Jzack
If you suspect it's the original fluid, I'd drain and fill with a good synthetic and then forget about it.
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This is what I did about 5 years ago. I did not see any significant amounts of metal in the old oil indicating abnormal wear. I should never have to do it again.
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Jim J
2002 Monaco Windsor 38 PKD Cummins ISC 350 8.3L
2005 Jeep Grand Cherokee w/5.7 Hemi
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