Diesel Engine Coolant

Research "Silicate Drop out" This was not uncommon before the advent of Low Silicate Anti Freeze.

A mix of ELC and SCA type coolant may cause this.

Pogoil.

We need the OP to come back and give us details.

Could be nothing more than mixing two non-compatible coolants. Sure, could be major engine work. But, if not milky that is unlikely.

It's never happened to me, but evidently has happened to folks on a Jeep forum I used to haunt. The common thread seems to be somebody put some of the wrong kind of antifreeze into a system that already had some of the right stuff in it, and the interaction turned to jello. Only way I can think of to clear it out involves lots of water blown forcefully through the system.

I'm not sure knowing the make and year of the engine makes any difference on this. Typically, a blown head gasket either allows water into the crankcase (if the leak is between the water jacket and the oil passage) and your oil will look like a chocolate milkshake or you will see steam (white smoke) if the leak is between the water jacket into the cylinder. Also a leak into the cylinder has a tendency to pressurize the coolant such that the coolant in the radiator seems like it is boiling.

I'm not sure how coolant reacts with xmission fluid, but I do know if you run your tranny with a large quantity of water in the fluid you'll be looking at a rebuild. I would start by looking at both the engine and tranny dipsticks for abnormal color and/or levels. Another thought may be two different types of coolant were mixed together that were not compatible or possibly not diluted properly with demineralize water (although I've never seen improper dilution result in the solidification of the coolant).

Please keep us informed in what you find and good luck.

Lou
05 Travel Supreme Envoy

blown head gasket(s) - bad thing.

The only wild a-- guess I can make is, engine oil or transmission fluid mixed in. I hope not, that would be big trouble! Hope it isn't.

Jerry

Good guess!!

ArchHoagland wrote:
Year, make, model, engine and miles on RV would help immensely.

How long have you had it and do you know what coolant was used in it?

Yup, like to help, but need more information.

The only wild a-- guess I can make is, engine oil or transmission fluid mixed in. I hope not, that would be big trouble! Hope it isn't.

Year, make, model, engine and miles on RV would help immensely.

How long have you had it and do you know what coolant was used in it?