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Topic: Bizarre Oil leak U320 (Read 310 times) previous topic - next topic

Bizarre Oil leak U320

So something very strange happened on my trip this past weekend. I have a 2001 U320, I did my preflight checks of pressure and fluids before leaving (all normal).... about 2hrs into my journey I saw a splatter via rear camera on my enclosed trailer front. I didn't know what it was, but upon my rest stop I was very evident that it was oil! The backend of the drivers side was where everything was wet most, (the Haladex) lost about 3+ quarts of oil, BUT with the engine running I found NO leak. I cleaned the very messy Eng bay, and Eng door, I looked for loose hoses.... Nothing found. During my driving I have a Road Relay 2 that monitors everything. Oil pressure was solid at 33-37. All temps and other pressures normal. The 400 mile trip home was uneventful and after post flight checks..... oil level is perfect and where it was for the return trip home. Baffled to say the least. Like it had an embolism. Hoping to hear from anyone that has had something similar or might have a clue as to what and why. Now to de-grease everything.
2001 36' U320 Build 5901
2001 LX470

Re: Bizarre Oil leak U320

Reply #1 –
And, you are sure it was engine oil (black), not diesel (different smell), transmission fluid (pink) or hydraulic system oil (clear oil)?
Brett Wolfe
EX: 1993 U240
Moderator, ForeForum 2001-
Moderator Diesel RV Club 2002-
Moderator, FMCA Forum 2009-2020
Chairman FMCA Technical Advisory Committee 2011-2020

Re: Bizarre Oil leak U320

Reply #2 –
Check your air filter.  I had a similar oil loss on my return trip from dusty Alaska.  Didn't see any oil on my toad but had lost a couple quarts.  Air filter was clogged, changed it and no other problems.
Forest & Cindy Olivier
1987 log cabin
2011 Roadtrek C210P
no longer 1999 36' U320 build #5522
2013 Rzr 570 & 2018 Ranger XP1000
2006 Lexus GX470
2011 Tahoe LT 4x4
Previous 1998 45' 2 slide Newell, 1993 39' Newell

Re: Bizarre Oil leak U320

Reply #3 –
As Brett it could be anything. Check your hydraulic fluid and trans levels.
Peter and Frieda Morin
1999 36ft. U320 Foretravel
Build # 5436
1998 Suzuki Sidekick Sport

Re: Bizarre Oil leak U320

Reply #4 –
It's definitely not the hydraulic oil for the fan/steering.... that's clean. It was definitely oil, black and made a mess. The air filter is 4K miles old. It's a mystery. I'll keep looking and maybe more ideas will pop up.
2001 36' U320 Build 5901
2001 LX470