2bucks
Guru
- Joined
- Oct 6, 2007
- Messages
- 698
A convenient thing for you to do is find an AF coolant that is appropriate for both engines and use it exclusively. Chevron has a number of long life choices, so I'd look in the owners manual to find what ASTM spec is preferred by each engine, then go to https://www.cbest.chevron.com/msdsServer/controller?module=com.chevron.lubes.msds.bus.BusPDSList
to find the product that fits your needs and is available in your area.
While looking around I find that many manufacturers are pushing the 50/50 mix. I suppose that works fine for topping off. For flush and fill remember that there is going to be some retain in the system that you can't get out. If you refill with 50/50 you will be diluted from the start.
A Lehman 120 holds about 5 gallons of coolant. So for me I'd drain, refill with whatever flush I'm going to use, run and circulate the water up to operating temp, drain again, (fill and flush as many times as needed until it comes out clean) then add 2.5 gallons full strength antifreeze. After that I'd top off with water. (distilled or filtered or tap is a whole 'nother argument) Then, with the half gallon of full strength I can dilute it to 50/50 for top off or leave it full strength as I desire.
I imagine most folks do it that way with both antifreeze and motor oil for drive engines and gensets.
Ken Buck
to find the product that fits your needs and is available in your area.
While looking around I find that many manufacturers are pushing the 50/50 mix. I suppose that works fine for topping off. For flush and fill remember that there is going to be some retain in the system that you can't get out. If you refill with 50/50 you will be diluted from the start.
A Lehman 120 holds about 5 gallons of coolant. So for me I'd drain, refill with whatever flush I'm going to use, run and circulate the water up to operating temp, drain again, (fill and flush as many times as needed until it comes out clean) then add 2.5 gallons full strength antifreeze. After that I'd top off with water. (distilled or filtered or tap is a whole 'nother argument) Then, with the half gallon of full strength I can dilute it to 50/50 for top off or leave it full strength as I desire.
I imagine most folks do it that way with both antifreeze and motor oil for drive engines and gensets.
Ken Buck