Hi everyone,
I've s3 109 with 2.5N/A on it. My problem is, every summer head drops its hot spots on to pistons and causing me too much trouble. I own the vehicle since last 3 years, and with this year this is its 3rd time doing the same thing. Last year this lead to full engine rebuilt. This year only a blown head gasket and some minor dents on 3rd piston. So what is causing that drops hot spots. Since last years full engine rebuilt I've done only 3000 miles.