How much coolant for rear rad?

Trailpunisher · Jul 28, 2015

Running Evans waterless coolant and just need to know how much to buy. Rear radiator all 1.75" lines and a small block Chevy . The radiator is a 16x31 with twin 1" cores. Thanks

Fire Freak · Jul 28, 2015

My sbc with rear radiator took 6 gallons of antifreeze / water

5BrothersFabrication · Jul 29, 2015

Don't remember what it took initially, but I do remember it took 4 1/2 gallons of Harlan creek water to top it off when I boiled it over. :****:

IROR · Jul 29, 2015

believe mine was about 6 gallons also. I left radiator hose off at thermostat housing till water came out to make sure all the air got out.

natedawgxj · Jul 29, 2015

mine has 31x19 and a jeep 4.0 it hold 5 gallons

Trailpunisher · Jul 29, 2015

Batmobile Will said:
Just FYI if it had water in system before you need to flush it before you put Evens in it

New rig all new motor and rad so no worries. Thanks though.

Trailpunisher · Jul 29, 2015

Looks like I need to order 6 gallons. Thanks guys.

ranger11 · Jul 29, 2015

Re:

I'd order 7 since you can't mix any water in. I've been reading on this for a few days now. You never know if you may have to top off.

snoball · Jul 31, 2015

Not familiar with that coolant but if it won't mix with water I would consider other options. It's not uncommon for a rear radiator rig to have air in the system that may not show up rite away. In fact I rolled my buggy this last weekend, and after a full day of wheeling the following morning started running hot...This happens to a lot of people. Water is everywhere!