IMSB Seasonal Storage

[thom4782]

IMS seals degrade when they get whetted with oil that contains acids and other combustion byproducts. The best strategy to slow deterioration, that is minimize it, is to keep the oil fresh and clean. Many people change oil just before storing their cars as part of this approach.

[MitchSF]

Seems to me that the acid theory should be easy to prove even on an engine that suffered IMS failure, simply by sending the parts for analysis by a testing lab.