| abstract |
A lubricating oil composition comprising a zinc dithiocarbamate fraction, for use in a gasoline or diesel engine equipped with fluoroelastomer seals, wherein said zinc dithiocarbamate fraction consists essentially of zinc dithiocarbamate molecules per Formula I:n having alkyl groups R 1 , R 2 , R 3 , and R 4 , wherein the weighted total average for carbon chain lengths for all molecules together is 9 or more: |