(Cracked Block) - Sudden Milky Oil - 351w

It sees whatever my well pump is pushing, and I'm guessing that's not a good idea?

I pulled the plugs after a 4 hour cool down & the plugs are clean.

Reinstalled plugs, hooked up to the hose & rain again for another 20 min, still Clean Oil.

Both of my last 2 runs I turn on the hose as soon as the motor fired, as opposed to turn it on before like I would prior.

Of course still not in the clear because that water had to come from somewhere, but it's better than finding water pissing out the dipstick hole.

Maybe the boat changed it's mind when threatened to cut it up into another bar if it didn't get it's sh*t together. Or it finally realized just who it's F-ing with.

One statement went through my head a lot this weekend, and it's something we should all remember: "If man put it together, it can be fixed".

Update: I drained the oil last night, took out about 1-3/4 to 2 gallons of chocolate milk. It didn't separate much over night so I can't really determine how much air / water / oil there was.

Edit: I did add about 2/3 - 1 qt of diesel for the last 10 seconds of the engine flush so that wasn't accounted for in the volume total above.

I finished changing the oil this morning, hooked it up to the hose & fired it up. In was expecting to run it for 5 min and see milky oil. I ran it for 30 min from idle to 3000 rpm trying to simulate my pass at the lake yesterday. The motor acted normal, good oil pressure, smooth operation, thermostat opened & closed a half a dozen and every time I pulled the dipstick it was at the same level with clean oil... WTF?

I mean this DOESN'T happen, the oil level can't be 2-3" higher with milky oil one day then after an oil change be fine the next day.

The only think I can think of is Friday during / after my carb test I accidentally left the hose hooked up and ON for 10-15 min after shutting the motor down. If there was a leak in the exhaust manifold perhaps it forced its way into a pistol and leaked passed the rings and into the crankcase over night. Then I fired it up in the AM to find a milky mess.

I'll let it cool down today and pull the plugs this afternoon.

I had ran mine in the spring to get it to the boat ramp and had no problems. In the fall when I was done with the hull work I was running it on a hose just to warm it up to change the oil. Saw the shake but it did not seem to add much volume. Dejected I talked it over with Tim and he had made some recommendations. Did a compression check and noticed a little water on #7 plug. Pulled the manifold and you could see the rust streak in the port and manifold already. So you should be able to see something if your getting that much water. Good luck hope it's something simple

Carefully disassemble, I had a head gasket failure due to a broken distributor, I could see the track across the surface of the gasket and the block where the water crossed. Was a very small area, not more than a 1/4 inch. But it put a lot of water into the oil. I also think a bunch of air gets emulsified in making it look worse than it is.

if you don't find an obvious track across a gasket surface, then you will have to dig deeper.

Drain, fill with new oil, warm it up, and repeat until the oil is clear again.

I know how you feel Andy I had it happen last fall. Hopefully it will just be a gasket

intake manifold or gasket, head gasket or head crack, worse case crack in water jacket on engine block.