I just had a thought but can't seem to dig up any information on it and thought I would post it here.
As many manufacturers are using plastic type timing chain guides and from what I can find this is impregnated with glass media for durability, I was wondering if some UOA's that are high in Si could be caused by excessive guide wear and not necessarily an unfiltered air leak or leaking gasket sealant that also contains Si, into the oil.
Could this be another possible consideration when looking at UOA's and seeing elevated Si levels?
Thoughts?
As many manufacturers are using plastic type timing chain guides and from what I can find this is impregnated with glass media for durability, I was wondering if some UOA's that are high in Si could be caused by excessive guide wear and not necessarily an unfiltered air leak or leaking gasket sealant that also contains Si, into the oil.
Could this be another possible consideration when looking at UOA's and seeing elevated Si levels?
Thoughts?
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