D318 spitting oil out of exhaust

Put her to work, if it's not getting up to operating temp then figure out why. Could be thermostats are stuck open. Might need to partially cover the radiator to warm it up. Might take a bit of time under a good load at temp to dry it out.

Hope this helps

Bruce P

Jim Zimmerman told me once that probably is not crankcase oil but soot because the engine is running slightly out of time.

I would do an oil change if its been in a while , make sure the breather is clean and as others say make sure it runs at a normal temp get it good and hot and make it work hard ...

Thanks for the info. That is what I have found out from other research I have done. I don't think there is an internal problem because it sounds great when running, and has very little blow by at breather. Sure looks like oil, but crankcase oil has fresh change and is not black like what it is spitting out. Tractor has been run very little in last 30 years, and only idled around. I plan on doing a re-torque on the head bolts because there is some oil seepage to the outside at the head gasket.

Excessive idle run time or light load running will get them to slobber. Allows the cylinders to glaze to where you lose ring seating. What you get is a mixture of lube oil, fuel and combustion products blowing out the stack. Sometimes a good workout will recover the ring sealing, sometimes not.

Got a D4-6U here that has slobbered forever. Runs and starts great.
Wound up rerouting the stack so I don't have to wear rain gear when operating.

As far as the head seepage, a lot of them do that. The fix is to use head gasket cement next time you have the head off.

[quote="Old Magnet"]Excessive idle run time or light load running will get them to slobber. Allows the cylinders to glaze to where you lose ring seating. What you get is a mixture of lube oil, fuel and combustion products blowing out the stack. Sometimes a good workout will recover the ring sealing, sometimes not.

Got a D4-6U here that has slobbered forever. Runs and starts great.
Wound up rerouting the stack so I don't have to wear rain gear when operating.

As far as the head seepage, a lot of them do that. The fix is to use head gasket cement next time you have the head off.[/quote]

Thanks, old magnet. It needs new rocker box gaskets, so I figured it couldn't hurt to re-torque the head while I have the rockers out of the way.What do you think? If the oil rings are not sealing it seems like there should be oil smoke out the exhaust, but it is clear. That is what is confusing to me.

It is running so cool that the oil isn't burning, it is coming out as your slobber.

Hey Team,

I agree with the slobber. I've seen Cats slobber like crazy. One had oil running out of head gaskets too. I worked it hard for a day, really making it grunt and lug. Slobber went away and head stopped leaking. They deserve to be worked hard every once in a while.
Glen

Re-torque if you like, your not going to hurt anything.
Yes, you may or may not see blue smoke, just the way it is.
The slobber mix accumulates in the exhaust manifold to where it doesn't get burned and you wind up blowing it out in its wet form.
Also can be a case of where the compression rings are working well but oil rings are shot.