Radiator replacement question.
Thread Starter
Pro
Joined: May 2015
Posts: 572
Likes: 21
From: Milford, CT
Radiator replacement question.
I replaced the original radiator on my 96 LT1 with an OEM radiator. The old one sprouted a leak while I was warming up the car in my garage. I also replaced the hoses and thermostat. Anyway., The system was recently flushed about 6 months ago. I didn’t have much coolant dump out when I opened the radiator petcock and removed the hoses. Coolant level under the Thermostat was right to the top. Filler tank where radiator cap is is empty. I would guess about 2-3quarts tops dumped out total. I am thinking I need to buy 2 gallons 50/50 orange, open the bleeder on the thermostat housing, pour in through the filler opening until it streams out of the bleeder, close it and start the car with the heater on low. Keep cool and level topped off as the system burps out the trapped air. Should I add coolant to the overflow tank? Also,, I noticed the t-stat that I replaced didn’t have the dribbler hole in it like the new Motorad one that I bought. I also probably need to add a little tranny fluid.
Melting Slicks
Joined: May 2003
Posts: 2,076
Likes: 281
From: Dyersburg TN
Open bleed valve on thermostat housing, fill until fluid comes then close. Continue filling until tank full. Start motor and watch for air bubbles, fill as needed. When coolant starts to rise out of tank install radiator cap and stop engine. Allow to cool and repeat last step until no more bubbles.
Thread Starter
Pro
Joined: May 2015
Posts: 572
Likes: 21
From: Milford, CT
Open bleed valve on thermostat housing, fill until fluid comes then close. Continue filling until tank full. Start motor and watch for air bubbles, fill as needed. When coolant starts to rise out of tank install radiator cap and stop engine. Allow to cool and repeat last step until no more bubbles.
