I have a 1998 ml320 with about 130,000 miles on it that has a slight radiator leak. This wouldnt be a problem except that I live in Baton Rouge, LA where even a slightly compromised radiator can be a problem in the summer. Unfortunately business is very slow and I cannot presently afford to replace the radiator. My question is, I am thinking of trying Bar's Radiator Stop Leak, and I am wondering if this product is safe to use in my car (I have gotten mixed opinions when researching on-line)? Appreciate your help!