- Location
- Los Angeles
I have a pretty minor leak on the fins of my radiator, it is an aftermarket 3 core radiator that a previous owner installed. It looks a lot like it's coming from fins in front of the clutch fan, but not 100% that it's the radiator for sure.
It is a pretty minor leak, very intermittent (seems to be more when the XJ is sitting vs driving hard/hot), I can get by with topping off the reservoir every month or two so it's not a immediate problem. It's kinda annoying to always have to keep an eye on, and probably not good for the environment, but I don't know if it's worth going out and replacing the whole radiator to fix it (I'm not even 100% it is the radiator).
I am planning on replacing the radiator hoses soon, and will have to drain the system anyway. Looks like it's pretty easy to take out the radiator once the system is drained. Do you guys have any suggestions for things I could do to try and patch up this leak on the radiator? Anyone have any experience with Flex Seal or any of the spray on sealants? Will those work on the fins of the radiator? They seem to be rubber based, which seems like it would just melt off a hot radiator, maybe use a high temp spray paint? I really do not want to use one of those additives to the coolant that will just gum up my cooling system, but I figure if a spray on sealant fails I'll be replacing the radiator anyway. Any other options?
It is a pretty minor leak, very intermittent (seems to be more when the XJ is sitting vs driving hard/hot), I can get by with topping off the reservoir every month or two so it's not a immediate problem. It's kinda annoying to always have to keep an eye on, and probably not good for the environment, but I don't know if it's worth going out and replacing the whole radiator to fix it (I'm not even 100% it is the radiator).
I am planning on replacing the radiator hoses soon, and will have to drain the system anyway. Looks like it's pretty easy to take out the radiator once the system is drained. Do you guys have any suggestions for things I could do to try and patch up this leak on the radiator? Anyone have any experience with Flex Seal or any of the spray on sealants? Will those work on the fins of the radiator? They seem to be rubber based, which seems like it would just melt off a hot radiator, maybe use a high temp spray paint? I really do not want to use one of those additives to the coolant that will just gum up my cooling system, but I figure if a spray on sealant fails I'll be replacing the radiator anyway. Any other options?