My dad would put a milky colored water pump lube in his T's to lube the pump and to put a layer of a lube to help reduce rusting in the water jacket. Has anyone heard of this product? I asked at O'reily without luck.

....................Royce? ....................

Did it come in a tube? If not, it will end up in one (or all).

macs 1300 water pump lube available at NAPA

Thank you Kevin. No Justin it was in a bottle and looked like a very watered down milk.

Out of curiosity, is it a coating that dries or does it just lubricate/ rust proof?

Would that be the 'soluble oil' I've read about?

Justin. It is like if you got water in your engine oil, its turns to a milk color liquid. What I can remember from 40 years ago, this stuff came in a pint sized bottle, was white and thin as water. He simply poured into the rad, and filled with water and left it in. He told me it helped to lube the pump he installed but mainly to penetrate and coat the water passages and radiator with a thin oily residue to prevent rust. Each winter he would drain the system and did it again the next driving season. Tell you what, tonight I will call and ask him if he remembers what the name of this product was.

Hmmm... Cutting fluid is milky, oily, and water soluble; I wonder if the two are related?

Okay. I would be interested in its rustproofing abilities. I don't plan on running a water pump but I have heard nothing but negatives particularly from greasing the pump (clogs radiator tubes and affects heat transfer). On the other hand, my water jacket has some of the nastiest rust and scale in it and I worry about that building up again when it sits for long periods without running.

OK more info. Just talked to my dad. He could not remember its name but it was just a rust inhibitor. When this product was poured into the rad, the water would turn white like milk. He bought several jars but has long since used it all.

He restored his T's in the 60's Had always run straight tap water and (I have the cars now) has never had a heating problem.

Hey guys, It is water soluble oil. We use it machine shops. Water is used to keep your parts cool and to size while you are cutting. And soluble oil it to keep things from rusting. Works great and very cheap. I use a soup can full to 5 gallons of water. Maybe a little more. Scott

Justin. The greasing of a water pump. I have been fighting that with my model A since I got it. The rad and block needs to be boiled out. I went on the tour at the speedster reunion and boiled all the water out three times in 112 miles. In my case I believe it is a mix of rust buildup and grease.

So give us a name and or place to buy Scott.

we have water pump grease, been selling it for years, no problems, Bob

Get this at most any auto parts store or the big box stores.

Dan, perhaps Gunk is it. The specks say it's white. I swear it was white.

There are many brands.

Herm.

It was called "drilling milk" back in the 40's. It was used as a lube on every thing from lathes, milling machines to drilling presses. We ran it through a pump, filter and back to the machine. In earlier days I used it in my radiator to lube the water pump. Sorry Tim Eyssen. Have no idea where to get it today.....Jerry.

I think you can use any modern wheel bearing or chassis grease. Old fashioned "long fibre" type greases turned to soap in the presence of water.

My dad put water pump lube in his 1927 Hupmobile. He never used anti-freeze, only water.

He called it "lamb's milk."

Don't confuse water pump lube with water pump grease.

Like Herm Kohnke wrote earlier, there are many different brands of water pump lube/radiator anti-rust:

https://www.google.com/search?q=water+pump+lube&client=safari&rls=en&source=lnms &tbm=isch&sa=X&ei=ru2VVbGdDJTgoAS4_KWoBQ&ved=0CAkQ_AUoAw&biw=1280&bih=686

most water pump lubes you buy are water soluble oil.
Cutting oil is water soluble oil.
I use about a 1/2 pint in my T, a quart in my flathead V8 pickup (22 qt. system) and a half pint in all modern cars to help fight rust and keep the water pump seal from wearing out so fast.
It mixes just fine with anti-freeze and you can use straight soluble oil, a little expensive but it will keep things from corroding.
It makes the coolant look milky.

Don't use to much, rubber hoses doesn't like soluble oil.

NAPA stores can get it, the ones around here have it in stock all the time.
Any parts store can order soluble oil.
Comes in quart bottles. STA-LUBE CRC brand.
On the back it says what ratio to mix for cutting and for grinding. 10:1 to 30:1.
For cooling systems it says 1 oz. for each 2 quarts of water.
Here in climates that don't freeze it is cheaper than anti-freeze and provides longer protection.
I change it in my cars and flush the systems every 10 years.

the coolant does not get in the bearings of a modern water pump.
Water pump lube will only lube the seal where it runs on the shaft.
It will NOT lubricate the bearings.
On a model A or T water pump the rear pump busing gets lubed by the coolant on some pumps.
The coolant gets into the rear bushing and is stopped by the packing in front of it.
Depending on anti-freeze to keep that rear bushing lubed is not a good idea.
Put some soluble oil in the radiator.

this stuff is hard to find. I ended up at NAPA and as Kevin said they have Macs 1300. I put it in the rad and will drive the car in a parade tomorrow. See how it goes. It was $3.00 and some change.

Machine shop supply stores and big truck supply stores always seem to have plenty of soluble oil on their shelves.