UFO Read Drive AXLE

[bill elder]

Should be REAR not Read

I have a 2008 Winnebago Destination 39W, with a UFO Chassis. I would like to know the following:
!) What type of fluid does it use?
2) How much does it hodd?
3) How often should you check the fluid?

Thanks

[DriVer]

Quote:

Originally Posted by bill elder Should be REAR not Read I have a 2008 Winnebago Destination 39W, with a UFO Chassis. I would like to know the following: !) What type of fluid does it use? 2) How much does it hold? 3) How often should you check the fluid?

Bill, Have you downloaded the 2009 Chassis Guide. I has a separate UFO section.

[bill elder]

Quote:

Originally Posted by DriVer Bill, Have you downloaded the 2009 Chassis Guide. I has a separate UFO section.

Yes, but does not mention , how much fluid, etc,

[bill elder]

Quote:

Originally Posted by bill elder Should be REAR not Read I have a 2008 Winnebago Destination 39W, with a UFO Chassis. I would like to know the following: !) What type of fluid does it use? 2) How much does it hodd? 3) How often should you check the fluid? Thanks

This what I just found:

Tech Tips
Rear Drive Axle

The Rear Drive Axle (AKA - Rear-end) needs little maintenance other than a periodic check. But, as most you know it is the most overlooked part of an RV as far as maintenance. With standard 80W-90 GL-5 gear lube you should see 100,000 miles before changing assuming it does get contaminated with dirt or moisture. But, with 75W-90 synthetic gear lube you can go 200,000 miles before changing.

The bottle on the left is NEW Mobil 1 75-90W. The bottle on the right has about 30,000 miles on the fluid and is going on 5 years old. Is it to early to change? Maybe, but considering that a coach can sit for days, week's or even months between trips and the trips can be anywhere from a 10 miles to 3,000 miles it's a wonder that it doesn't look like a milk shake due to condensation that gets in via the vent tube.

The Dana 130/150's used on the W22/24 holds 24.5 pints of fluid/gear lube. Yes, that is 12 quarts or 3+ gallons. The price of Mobil 1 75W-90 Synthetic Gear Lubricant is $9 a quart. Products like Royal Purple and Redline cost about $15 a quart.
To drain the rear axle you need a 1/2" drive ratchet to remove the drain plug at the bottom of the rear axle housing. You will also need something the will hold 3 gallons of fluid. I would also suggest that you drain the fluid shortly after you pull in off the road while the fluid is warm.

Once the fluid/gear lube is completely drained replace the drain plug and tighten. You may want to add a little "thread sealant" for insurance against a leak.

Now remove the fill plug on the back to the rear end housing and add 12 quarts of 75W-90 Synthetic Gear Lube or until the fluid start to run out of the fill hole. Be sure that you drain the bottles completely as you can lose as much as a 1-quart if you don't. I used the first bottle and drained each succeeding bottle into it. Once you have all the fluid/gear lube in the rear end replace and tighten the fill plug.

[DriVer]

I looked in the book and here's what I found.

The UFO has a Dana S135/150.

The fluid capacity on it is: 24.5 pints / 12.25 Qts.

The OE fluid is: Chevron Delo Gear Lubricant ESI SAE 80W-90 P/N CPS224503. The service interval is 250,000 miles if not contaminated.

Periodic fluid checks are recommended however it requires little maintenance.

Opinion: 75W-90 Synthetic may also be used.

[bill elder]

Quote:

Originally Posted by DriVer I looked in the book and here's what I found. The UFO has a Dana S135/150. The fluid capacity on it is: 24.5 pints / 12.25 Qts. The OE fluid is: Chevron Delo Gear Lubricant ESI SAE 80W-90 P/N CPS224503. The service interval is 250,000 miles if not contaminated. Periodic fluid checks are recommended however it requires little maintenance. Opinion: 75W-90 Synthetic may also be used.

Thanks