Coolant change

The Cub Club -- Questions and answers to all of your Cub related issues.
Forum rules
Notice: For sale and wanted posts are not allowed in this forum. Please use our free classifieds or one of our site sponsors for your tractor and parts needs.
FarmerCPA
Cub Star
Cub Star
Posts: 107
Joined: Sat Jun 01, 2019 3:31 pm
Zip Code: 00000
Tractors Owned: 1947 Farmall Cub
1950 Farmall C
Location: Northwestern Wisconsin

Coolant change

Postby FarmerCPA » Fri Aug 30, 2019 11:30 am

I have a restored 1947 cub that was rebuilt about a year ago. The coolant in it is about a year old. Just for preventative measures I was thinking of draining and replacing the coolant with fresh stuff. There shouldn't be any crud in the system after just one year and I have seen no signs of overheating or blockages.

The owners manual says to mix water and washing soda and run the engine with the cap off until warm, then drain and fill with coolant. Do I even need to do that after just one year after a full rebuild? By most standards the coolant system looks to still be laboratory clean.

Thanks.

User avatar
Don McCombs
Team Cub Mentor
Team Cub Mentor
Posts: 16160
Joined: Mon Feb 03, 2003 6:45 am
Zip Code: 21550
Tractors Owned: "1950 Something" Farmall Cub
1957 Farmall Cub w/FH
1977 International Cub w/FH
1978 International Cub
1948 Farmall Super A
Circle of Safety: Y
Location: MD, Deep Creek Lake

Re: Coolant change

Postby Don McCombs » Fri Aug 30, 2019 12:07 pm

You could test the specific gravity to make sure you’re protected. Otherwise, my opinion is that it would be a waste of time and money to replace it.
Don McCombs
MD, Deep Creek Lake

Image
Proud Member of Maryland Chapter 39
Circle of Safety

JohnMihevic
5+ Years
5+ Years
Posts: 131
Joined: Fri May 13, 2016 8:23 am
Zip Code: 44253
Tractors Owned: Farmall Cub
C3 Mower
Hammond B3 for Rainy Days
Location: Medina Ohio

Re: Coolant change

Postby JohnMihevic » Fri Aug 30, 2019 12:08 pm

Since I rebuilt my 1948 Cub and installed a new radiator, I drain it every fall and refill with 50% Prestone and 50% water. There is no film, rust, etc. just "squeaky" clean. The main reason I do that is to put in anti freeze with fresh rust inhibitor, as that's what deteriorates with engine operation. Also, I don't flush with any kind of cleaners, etc. I am afraid there will be some left in "pockets" of the cooling system. I just drain and refill with fresh.

John M.

User avatar
Stanton
Team Cub
Team Cub
Posts: 7445
Joined: Mon Jun 22, 2009 6:56 am
Zip Code: 64070
Tractors Owned: 1942 Farmall AV, serial #87025
1947 Farmall Circle Cub, serial #2116
1948 Farmall Cub, serial #46066
Circle of Safety: Y
Location: Lone Jack, MO

Re: Coolant change

Postby Stanton » Fri Aug 30, 2019 12:33 pm

FarmerCPA wrote:...Do I even need to do that after just one year after a full rebuild?...


To answer your question, no, you won't need to flush your coolant system. Think I would test it, as Don suggested, before draining it. You may not need to replace the antifreeze but every other year.
Image
Stanton
Image Circle of Safety

FarmerCPA
Cub Star
Cub Star
Posts: 107
Joined: Sat Jun 01, 2019 3:31 pm
Zip Code: 00000
Tractors Owned: 1947 Farmall Cub
1950 Farmall C
Location: Northwestern Wisconsin

Re: Coolant change

Postby FarmerCPA » Fri Aug 30, 2019 1:35 pm

If anything I might just drain the radiator and refill with new mix just to keep the corrosion inhibitors up to snuff, even if not really needed. I have a specific gravity tester lying around somewhere as well.

It could be a quick project to do on a rainy day.


  • Similar Topics
    Replies
    Views
    Last post

Return to “Farmall Cub”

Who is online

Users browsing this forum: No registered users and 8 guests