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Deuce Oil Leak Question

palskidoo

Member
88
1
8
Location
CT
Hello Everybody,

Some of you may know that this past weekend the Northeast had an unusual heat wave run thru with temps. pushing 100 degrees! The hottest day was last Friday, which happened to be the day of a Luke Bryan country concert that I had been looking forward to driving the deuce too for a some tailgating. Needless to say running up the highway and idling in traffic for about an hour she got HOT!!! temp gage read 210 degrees when we finally stopped, no big deal, we tailgated for a few hours and then ran home around 8pm back down the highway. The motor got hot (about 210) again and then when I stopped at home after letting her idle for a moment i shut her down and noticed she was "puking" oil on the ground from the plug hole in the picture. I thought it might be a rear main seal on the motor but the leak stopped after a few min. The following day I drove her across town to a spot i can leave the truck for a while as i look up how to change the seal but when i parked there was no leak, maybe or two but not like puking oil the day before.

So could it be a rear main seal or maybe a breather tube is plugged a bit and when the motor got cooking the oil just pushed out somewhere else? I'm not the diesel mechanic i wished i was so any advice would be great and im really hoping its not a rear main!!

thanks!
 

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palskidoo

Member
88
1
8
Location
CT
im 90% sure its motor oil. It was jet black too but i can confirm this when i get home from work....
 

Flyingvan911

Well-known member
4,709
158
63
Location
Kansas City, MO
If you got some diesel in the oil it may leak when hot. When my manifold heater put a gallon of diesel in my oil the engine leaked in the front. I changed the oil and the leak stopped. Do you have the intake manifold heater or is your FDC not bypassed?
 

palskidoo

Member
88
1
8
Location
CT
If you got some diesel in the oil it may leak when hot. When my manifold heater put a gallon of diesel in my oil the engine leaked in the front. I changed the oil and the leak stopped. Do you have the intake manifold heater or is your FDC not bypassed?
this is why i like to ask advice on this site! i never would have thought of diesel getting into the motor oil....

i have an intake manifold heater and the truck is still 99% military so i'd venture to say the FDC is not bypassed. im making a list of things to look for now when i go see the truck tonight
 

scooter01922

Well-known member
1,721
42
48
Location
Newbury, MA
Mine generally likes to leak more oil when its particularly hot. It certainly was a scorcher friday with sat and sun being toasty too. The thermometer on my car read 102 on the way home at 3pm. Haven't really seen much more than a few drips from that drain though, rear main would be the likely leak location but like the others said if its fuel dilution related you might have an easier fix.
 

ducer

Member
297
1
18
Location
Ober, indiana
That sucker was just marking it's territory!:whistle: But seriously what is the fluid level in the transmission? Oil level should be atleast 1 nuckle below the fill plug hole. Oil expands when hot and will belch out bering retainer.

Good luck,
Denny
 
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