Antifreeze/coolant

Only real reason to flush system would be if the coolant looks dirty when draining . If still green drain and refill with a 50/50 mixture ! The pre packaged 50/50 are more expensive but the water in it is better than most house water ! I would stay with green antifreeze , there are only 3 or 4 manufacturers so brand is not very important . Stay away from the red extended life !!!!

Edited by dustydoo - 11 Oct 2017 at 3:42pm

I was told that if you want to flush your coolant system to fill it up with a heavy concentration of Dawn detergent and water. Run the engine for 20 minutes. Drain the system and flush with water from a hose. Then fill with coolant. 
Never tried it.
I would flush the system with water. Stick the water hose in an inlet somewhere and let it run out a bottom hose. I've only done this on cars but, lots of muck comes out.

I would use the green stuff. Just make sure to add enough dca for the gallons you put in. It helps prevent pitting the cylinder liners from the coolant side.

Most if not all of the extended life antifreezes are only extended life if factory filled . They for an organic wall on the inside of the engine to promote longer life . Once green is introduce the film is removed . At the radiator shop where I work we use compressed air and water to flush a system when contaminated . I like to use soap when I have an oil filled radiator on the floor , not sure how well it works in dirt . The newer antifreezes also are not very good at handling the air in older cooling systems ,most newer systems are 100 0/0  full  where older systems leave a small air pocket at the top on cool down . 

See what the truckers use. Ethylene Glycol antifreeze can be recycled. It gets filtered and PH checked and is reused. The organic stuff is Propylene Glycol that is bio degradable Don't use that. The newer antifreeze is for gasoline powered automobiles with aluminum motors and radiators. If you have a knowledgeable bulk oil supplier in your area ask them about antifreeze for diesel motors.

Damn spell check. My message should have said Fleet Precharged brand from Peak.

Has SCA already precharged in the product eliminating having to add SCA separately.

What the heck is SCA and is it a good thing?

michale34 wrote: I have used that tractor supply antifreeze for years and no problems. but on the other hand theres a lot of difference between northern states and southern states. lol  I have also used Walmart supertech antifreeze .  My dad always used peek in the dozers mainly because its what the moble oil bulk station sold . I remember when I was a kid on Christmas eve late in the evening we would always have to go check on the dozers and loaders to put antifreeze in them. most of the time they were in a dirt pit or  job site .found out later it was to get us out of the house so mom could get the presents out for later that night.

hahaha, that Santa,, pretty tricky fellow.

SCA means supplimental coolant additives, this is vital in a diesel engine. You would be money ahead to use a heavy duty precharged antifreeze instead of cheap ass auto antifreeze. It helps prevent cavitation too your liners. There is a major difference in auto and truck/tractor antifreeze