Quote:
Originally Posted by hancock
Thanks Ken for your reassurence!
However with any new technology there has to be 'due diligence' by that I mean not only engine test bed testing to build up sufficent technical confidence on the application and on the actual wear parameters since there will be 'sliding' wear.
The valve operating mechanism in any 4 stroke engine is where special attention has to be made to protest 'sliding' surfaces. For instance the introduction of roller followers on cams.
So no hydrodynamic protection and wear protection will be based on the lubricant antiwear properties (ZDDP) and metalurgical considerations such as choice of material and surface treatment to the splines that move the 'collar mechanism' also how this movement interacts with the cams surfaces?
Additionally, I'm sure VW would have conducted field trails to assess wear in the real world. All this testing takes time to complete before the engine can obtain VW sign off and approval.
So I belive in this case where VW is introducing new technology, there needs to be warranty protection.
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Absolutely right, especially with VW. As far as I'm concerned, VW needs extra scrutiny due to their massive failure on the new common rail diesels. 2009 and 2010 diesels have a very common injection pump failure, and though they have finally seemed to address the problem, they were prone to blaming the new owners on putting gasoline in the fuel and dragging out the warranty process to a ridiculous degree before honoring warranty coverage.