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 …

Is Bar's Radiator Stop Leak safe to use

Tester April 13, 2011, 3:48pm 5

Put a tablespoon of black pepper in the coolant, replace the radiator cap, start the engine and watch the leak stop before your eyes.

Tester