Anti Freeze in my Oil!

I had water (Anti Freeze) leak into the oil....Not sure which one was the culprit...Water Pump or Head Gasket... But after having the machine shop test the heads and finding nothing wrong, I put a new oil pump gasket on just to be safe...Now the leak appears to be fixed.

So, I am wondering what to do about flushing all that anti freeze out of the engine. What is the recommended way get anti Freeze out of the lifters and such? Currently I am hearing a bit of clattering from the drive side valves..Hence, why I am thinking I may have anti freeze in the lifters. Is there anything else I should be concerned about?

I just had this motor completely gone through at the machine shop...New pistons (.030), Rings, Bearings, Comp 252H cam kit, balanced....Also had a valve job done which included installing hardened seats....etc...etc..etc This is a Dauntless 225 V6...

 

Once you replace the oil and start the engine, the engine heat will drive out the water. I'd change the oil, run the engine, then change the oil. Normally there's a little condensation in the crankcase, if you have the right temperature and humidity conditions. I don't think it will hurt anything.

If you want to pre-oil the engine, you can put a tool down the distributor shaft and spin the oil pump. This should deliver oil to the lifters, it that's the source of the clatter. The tool is just a long rod with a flat on the end, chucked in your electric drill. There are special made tools, or you can take the handle off of a long screwdriver. Or make a tool. Some put a bushing on the top end of the rod so that it does not whip around in the distributor bore.

 

Changed the oil and filter....Ran it for 15 mins...No sign of any water/anti freeze in the oil. But I am still hearing clattering on the driver side head/valve train. Wasn't there before this water leaking into the oil. Got me a little concerned somethings happened to the motor. Any recommendations how to proceed? Hate to do any damage to this motor.

 

If it were mine I would drain out 1 quart of oil and put in a quart of Marvel Mystery Oil and crank it up. See if that don't quiet down those lifters pretty soon.

 

The only thing I can imagine is that you have water in the lifters. The water is less viscous than the oil, and might let the lifter collapse rather than push the push rod. But that should go away when the oil is renewed.

How much detergent is in MMO? I would think that extra detergent would tend to hold the water in suspension, and help to clear it out.

What's your hot idle oil pressure?

 

Tim


I am getting ~ 50lbs at cold start up and ~ 25lbs when hot. Is that normal for a motor that's had a complete rebuild done?

Thanks


Mike

 

That seems ok to me. It varies some from engine to engine, but you don't want to see a very low (like 0 to 10 psi) pressure at hot idle.

You still in contact with the engine builder? If it still clatters, I'd go talk to them about it.

 

Tim

Engine Builder? Hmmmm...not sure how to answer that one...but I'll try and explain.

Well the machine shop that did the engine work did NOT assemble the engine. Seems my father-in-law misunderstood or forgot to ask whether their quote included re-assembling the motor. Turns out it did NOT. The machine shop simply handed him the enigine block, heads, along with a box comprised of new Pistons, Rods, new Rings, new crank and rod Bearings, new Cam, new Lifters and a full gasket set.... They only did the block work (bored it to .030 over), turned the crank shaft, balanced the motor with flywheel, pressed in the cam bearings and did a valve job on the heads. This Box of Parts was an unexpected surprise to him when he went to pick it up. At that point I don't know why he didn't just ask them what they would charge to re-assemble the engine. Anyway, he took on the job of re-assembling the motor himself...Not something he has a great deal of experience doing. Don't get me wrong, he's no novice at engine work...just not this type of stuff. He's a retired farmer and has done his share of engine work on old engines and tractors etc..

Ya know how projects can start out simple and small and morph into something you regret...Totally out of control in scope and costs? I sure hope I feel differently when all is said and done.