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Hey Guys, Has anyone come across the leaching of silver plating bearings (notably in allison torrington bearings) when using a multi-grade oil or any oil with zinc additives. I realise the zinc (especially zinc dithiophosphate) can degrade the silver via some form of 'galvanic corrosion'. But I...

Dusty roads you are indeed right it is also still made by Mobil in Australia. There are however two different types of Cat Deo - one with the CI-4 rating. And one with The CJ-4 rating. They are pretty much a similar oil only with a slight variation in their additive packages both would be...