Bought a 22" restored rad from a member here that was suppose to be brand new. Still have a hang tag showing mopar number and size. I installed it and filled it with fluids and sat for 3 days and was ok. Got engine all hooked up and started it and ran for 20 minutes. Next day I noticed a 1" diameter puddle on floor and looked at rad ....the lower rad support also had antifreeze sitting in it. Let the car sit while doing the dash and interior wiring and it did not leak over the last 2 months and when i started it again ...sure enough ...a tiny puddle on floor. I'm guessing it only leaks under pressure and maybe only about an 1/8 glass full of fluid ...mind you i only ran it for 20 min. again. Looks like it was wet on interior side right in front of the clutch fan. Is there any quick fix or should I be looking at taking it out and off to the rad shop in the city.
Rad Leak
- Thread starter SB69GTS
- Start date
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GM cooling system tabs, every GM dealer stocks them, they are for any motor with aluminum heads, intake, block, plastic intake. We put them in every thing and they work great best I have ever used.
Crush them into a powder put them in the rad and drive it for 15 - 20 min and you wont have a leak.
Crush them into a powder put them in the rad and drive it for 15 - 20 min and you wont have a leak.
Have you found the leak? Could be hose clamp leak,gasket leak or?
kiss
Well-Known Member
Don't put any radiator sealant in there.
Check closely for leaks. I've had radiator hose clamps that I could have sworn were on there tight but they did leak, very slightly. Check those clamps. Try loosening and rotating them and re-tightening them.
If the leak is still there pull the rad and have a shop test it
Check closely for leaks. I've had radiator hose clamps that I could have sworn were on there tight but they did leak, very slightly. Check those clamps. Try loosening and rotating them and re-tightening them.
If the leak is still there pull the rad and have a shop test it
TrailBeast
AKA Mopars4us on Youtube
Alumaseal. (Yep that's a period at the end
)Best and safest stuff there is for small leaks IMO.
TrailBeast
AKA Mopars4us on Youtube
Find the leak first.
There not just for aluminum but Cadillac started using them in the 80's with the 4.5, 4.9 engines, aluminum blocks and cast iron heads. I wont plug up anything, I worked for Cadillac from 1998 till 2008 and it's in the owners manual and on a sticker under the hood on all Cadillac's even the Escalade.
If it was bad they wouldn't use it.
Good advice^^^^^^^^^^^^
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