so I have a small pin hole leak in my radiator have anyone successfully used BARS LEAK or is there a good product to use. this is a very small leak. I know this may not be the best thing to do but I can not get to the leak to weld it up.

If I was into the money at a big money race I may try barsleak to get through the day. Radiators are fairly cheap when compared to the cost of a race car. A leak on track may cause a wreck that totals out the car and maybe you. Replace the radiator.