> > > > The heads I've seen with corrosion have pitting all over the inside face of > > the head wherever the coolant comes in contact. It looked to me more like > > aluminum deterioration than it did destruction of the gasket. Whatever the > > case, the antifreeze change (using phos-free like Joel said) has got to be > > Hmmmm... From previous postings about this issue, I was under the impression > that the concern was about getting air into the system. If this is not > true, then why were we fussin' about bleeding the system so much if that > is not the cause of the head leak problem, eh? > Sure , if you change the coolant and do not follow the mfr directions, you will surely end up in deep trouble. The cooling system unlike most other systems must be bled just like your brake system. This means opening the bleed valve in the radiator in front and make sure the coolant is filled 100% or else air pockets will remain resulting in poor cooling of the engine and thus overheating. This probably is one of the most common cause of engine overheating in the vanagon. Also the early version of the vehicle has an inferior water pump that has a weak bearing so make sure you order the modified unit in advance or at least have a rebuilt as spare . Those original pumps dont last like a Mb or Toyota. When you are on a long trip and it goes you'll be thankful you had one. You dont pick this up too easily anywhere. terrytan@ritz.mordor.com
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