just found a antifreeze seep near or this plug in the head need help

[Homer Jay]

Agree opinions will vary. Regardless what oil you use, it's critical to check and change when required. However, I disagree with your statement " They say you should never go to fully synthetic on a car that has more then 10,000 miles" Who is they and what is the science/research to support that statement?

 

[SAYBER]

Agree opinions will vary. Regardless what oil you use, it's critical to check and change when required. However, I disagree with your statement " They say you should never go to fully synthetic on a car that has more then 10,000 miles" Who is they and what is the science/research to support that statement?

This information is something thats just known, mechanics I've worked with also agree.

 

[lasabre]

I changed to synthetic at 55,000 miles without one leak