'83 310 with pinhole leak on top of top tank...
We are on the road until the last week in July and I just found a small leak when we stopped after a couple hundred mile drive. It's on the top of the top tank but I can't actually see the surface of the tank-it's kind of behind the radiator mount hoop. Hoses are like new and there's no sign of loose clamps. There's dried coolant running down the fan side of the radiator on the driver side of the coach. Definite stain coming from the very top of the radiator. A small amount of stain on the front of the top tank also but very little.
One thing, I understand there's no point in running risk by trying Stop Leak; it would not probably reach a leak in this location anyway. I plan to keep traveling, check it frequently, and carry plenty of spare coolant.
The other thing is, do you know if a radiator shop can repair a tank leak?
Reason I ask, is that I can't find anyone's comments about a leak and repair in that location, it's always about core leaks.
Airstream OCD...there is no cure!
1983 Classic 310 Motorhome.