C-263 gas with oil seep burning

Hi, this came up on another thread with someone else who had a similar issue so I thought I'd ask since the oil seep seems confusing.

C-263 gas engine in a 2606 Industrial. Mine seems to have a place or two there by the exhaust manifold bolts (rear may be right if I remember correctly) where there is some type of fresh oil seep. I've run it for hours moving hay bales with no problems.

However mine also has alot of blowby(oil smoke coming out of the blowby tube under pressure) but I still use it and it doesn't use oil (maybe 1/4 qt in 3 hours). It's not as bad as a couple old cars I had years ago that got about 30 miles to the qt. It'll fog mosquitos but doesn't lay down a smoke screen yet. Hand under the blowby tube will leave oil on it.

I have to keep the oil filler cap screwed on tight or it will blow oil out. It does not have any blue oil smoke coming out the exhaust though. I've never run a compression check on mine.

Just seems kinda odd to have oil seeps around the exhaust manifold bolts, a lot of blue smoke under pressure coming from the blowby tube, but not out the exhaust like my old cars. The exhaust is barely visible.

I figure I can go a few years without doing a ring job, bearings, and a complete overhaul, but I wonder if it might be something a little more reasonable to fix.

Thanks.

usually excessive blowby is caused by worn rings, however, it could be caused by other things too, ie, cracked piston, blown head gasket ect. the oil by the exhaust is more than likly coming past the rings and getting in the exhaust manifold, not burning off and dripping out. run a dry and then wet compression test, first, pull all plugs, throttle wide open, ignition off, test each cylinder, write the numbers down, then squirt 2-3 pumps of engine oil in each cylinder, roll the motor over couple times and retest. more than 10% variation, and the rings are worn, low compression with no change, look to valves, head gasket or cracked head. you are prooly due for a major on the motor, but if its a year or two away, try tossing a can of stp oil treatment in the crankcase, it will thicken the oil up and cut down on some of the oil consumption.

Good chance the oil seeping around the exhaust manifold is caused by the combination of high crankcase pressure and a leaking rocker box gasket.

You might try GENTLY tightening the rocker box screws if you find them loose. Or for a few $$$ and an hour or so of your time install a new rocker box gasket.

Won't be a substitute for a complete overhaul. But it might get you the few more years you are looking for.