I used them for an oil change on my commercial vehicle. Perfect. However, I have a collector car. The head gasket blew out on it. The car is 50 years old, so no surprise. The leakage under the gasket had been ongoing for many years, and the block needed maintenance. The engine was rebuilt beautifully, the transmission trimmed up. Much more. The car runs like the proverbial top. I am enthusiastic about Four Rings and recommend them highly. Important to know; they are excruciatingly honest. Until it hurts.
Thank you Steve for positive feedback. always pleasure to work on your Mercedes
- 4 Rings European Autowerx