Good advice on the bolt replacement. Since I was doing this at night, I did not have the luxury of running to a parts house. Also, living 15 miles from the nearest McParts does not help either. I also did not think about it. I had no problem removing or replacing them.
I also have a Stanley 10 mm whose box head was too thick to even get on the bolts, that is why I bought to $3.00 "GoodWrench" brand.
Does anyone know the difference between the G05 and the G12 coolants? Our TDI Jetta requires the G12. McParts does not know "G anything" except each brand claims to be comapatible.
I read the Prestone placard at Auto Zone that stated Non silicate systems should "operate properly" on silicate coolant.

Yeah, right. If that is the case, then why do non silicate systems develope water pump seal and bearing failures when silicates are added? Silicate = fine grit = a grinding action = seals and bearing ginding away...
Thanks!