EagleEye Posted September 21, 2017 Report Share Posted September 21, 2017 Checked my bearings today and one of them is low on oil. What weight and type of oil should I use to replenish it? Dave and Marge 2010 Phaeton Motor Home Previous Mobile Suites 36 RSSB3 (for sale) and 2005 FL M2-106 Sport (for sale after 5er sells) Link to comment Share on other sites More sharing options...
Devilishjim Posted September 21, 2017 Report Share Posted September 21, 2017 OK Its cold Its wet and I'm bored so I will bite What oil filled bearings ? Jim Spence 2000 Dodge 3500 1 ton QC 4x4 dually 5.9 diesel LB BD exhaust brake, 6 spd manual trans 34CKTS Cedar Creek 5er, Trail-Air hitch Link to comment Share on other sites More sharing options...
EagleEye Posted September 21, 2017 Author Report Share Posted September 21, 2017 2 minutes ago, Devilishjim said: OK Its cold Its wet and I'm bored so I will bite What oil filled bearings ? My Mobile Suite has oil wheel bearings. I need to add some oil to one of them. Dave and Marge 2010 Phaeton Motor Home Previous Mobile Suites 36 RSSB3 (for sale) and 2005 FL M2-106 Sport (for sale after 5er sells) Link to comment Share on other sites More sharing options...
MnP Posted September 21, 2017 Report Share Posted September 21, 2017 80-90 wt gear oil. I get mine at NAPA. Mike 2014 Mobile Suites 38RSSB3 Mike Full Time Since 2013 2014 MS 38RSSB3 2018 Ram 3500 Dually, Auto Level Air Ride, Aisin 3.73 Link to comment Share on other sites More sharing options...
Devilishjim Posted September 21, 2017 Report Share Posted September 21, 2017 Interesting Have you located a leak I can just imagine what oil would do to brake pads. Try asking google my guess would be 140W. I tried to google on my phone but my connection is weak..looks like a few problems with oil bath wheels Jim Spence 2000 Dodge 3500 1 ton QC 4x4 dually 5.9 diesel LB BD exhaust brake, 6 spd manual trans 34CKTS Cedar Creek 5er, Trail-Air hitch Link to comment Share on other sites More sharing options...
EagleEye Posted September 21, 2017 Author Report Share Posted September 21, 2017 Thanks for the replies. I found some Lucas Hub Oil at NAPA. Tried a truck stop and another auto parts store before I found it at NAPA. No I didn't see any signs of a leak. I'll check it again in a couple hundred miles and see what it looks like then. Dave and Marge 2010 Phaeton Motor Home Previous Mobile Suites 36 RSSB3 (for sale) and 2005 FL M2-106 Sport (for sale after 5er sells) Link to comment Share on other sites More sharing options...
I'mdonewiththis forum Posted September 22, 2017 Report Share Posted September 22, 2017 Jim, keep in mind that all the semi trucks you see on the road have oil bath bearings. They last many more miles than grease packed. Link to comment Share on other sites More sharing options...
gjhunter01 Posted September 22, 2017 Report Share Posted September 22, 2017 Most pickup trucks with dual wheels have oil bath wheel bearings fed from the differential. If you need to work on the bearings or axles, it's important to prime the hubs, one method is to jack up one side of the truck to allow the oil to flow to the hub. This is not required on a trailer hub since they are all separate hubs. Amsoil has synthetic 75/90 gear oil that I have used on trailer hubs with good results. Greg Link to comment Share on other sites More sharing options...
Ronbo Posted September 22, 2017 Report Share Posted September 22, 2017 75w90 synthetic. The napa hub oil may be synthetic. Most likely leak is rear seal. I will be converting to oil bath in the next 3 weeks. Ron C. 2013 Dynamax Trilogy 3850 D3 2000 Kenworth T2000 Optimus Prime Link to comment Share on other sites More sharing options...
gjhunter01 Posted September 22, 2017 Report Share Posted September 22, 2017 1 hour ago, Ronbo said: 75w90 synthetic. The napa hub oil may be synthetic. Most likely leak is rear seal. I will be converting to oil bath in the next 3 weeks. I'm curious on why the change to oil bath bearings, Is it cost effective? I've had both systems on trailers and while the yearly greasing of bearings is a PITA, the cost is almost nothing if you DIY and the brake visual inspection is a bonus. Greg Link to comment Share on other sites More sharing options...
GeorgiaHybrid Posted September 22, 2017 Report Share Posted September 22, 2017 The only difference on a DRV between oil and grease bearings is the inner seal. The oil filled has two sealing rings, the greased has one. It has been recommended by more than one to drill a VERY small hole in the black fill plug for venting if swapping to oil due to thermal air pressure buildup. They have been known to blow the seal because of pressure and lose their oil. I just prefer to keep my good old tub of grease and clean, inspect and re-grease every couple of years. 2017 Kenworth T6802015 DRV 38RSSA Elite Suites2016 Smart Prime Link to comment Share on other sites More sharing options...
Ray,IN Posted September 25, 2017 Report Share Posted September 25, 2017 On 9/21/2017 at 2:15 PM, EagleEye said: Checked my bearings today and one of them is low on oil. What weight and type of oil should I use to replenish it? deleted, redundant. 2000 Winnebago Ultimate Freedom USQ40JD, ISC 8.3 Cummins 350, Spartan MM Chassis. USA IN 1SG retired;Good Sam Life member,FMCA ." And so, my fellow Americans: ask not what your country can do for you--ask what you can do for your country. John F. Kennedy 20 Jan 1961 Link to comment Share on other sites More sharing options...
masterdrago Posted October 4, 2017 Report Share Posted October 4, 2017 Our boat trailer has Reliable brand wet bearings with sight glass. After 10 years they still look great with same amount and same color oil. Book says use 75w-90. 1st Time RVer 2018 Montana 3791RD, 2018 Ram 3500 DRW Link to comment Share on other sites More sharing options...
noteven Posted October 5, 2017 Report Share Posted October 5, 2017 23 hours ago, masterdrago said: Our boat trailer has Reliable brand wet bearings with sight glass. After 10 years they still look great with same amount and same color oil. Book says use 75w-90. Dexter in my boat trailer (I think) ... 75w-90 Front wheel bearings on the dually - 75w-90 "Are we there yet?" asked no motorcycle rider, ever. Link to comment Share on other sites More sharing options...
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